Contents Page

:	Jan 30, 2008

Overview

This section covers the sensors and units for the engine management system.

For more information on the system, refer to section 303-14B - Electronic Engine Controls - 4.4L workshop manual section.

Inspection and Verification

. Verify the customer concern.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical	Electrical
Engine oil level Cooling system coolant level Fuel level Fuel contamination/grade/quality Sensor installation/condition Viscous fan and solenoid	Fuses Wiring harness Electrical connector(s) Sensor(s) Engine control module (ECM) Transmission control module (TCM)

. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

. Use the approved diagnostic system or a scan tool to retrieve any DTCs before moving onto the symptom chart or DTC index.

Make sure that all DTCs are cleared following rectification.

Symptom Chart

Symptom (general)	Symptom (specific)	Possible causes	Action
Non-Start	Engine does not crank	Security system /Immobilizer engaged ECM relay Battery Starting system Harness Engine seized	Check that the security system is disarmed. Check the ECM relay operation. For battery information and starting system tests, refer to the relevant workshop manual section. Check that the engine turns by hand.
	Engine cranks, but does not fire	Low/Contaminated fuel Ignition system Fuel system Crankshaft position (CKP) sensor Harness ECM fault	Check the fuel level and condition. For ignition system tests and fuel system tests, refer to the relevant workshop manual section. For CKP and harness tests refer to the guided diagnostic routine on the approved diagnostic system. Refer to the warranty policy and procedures manual if an ECM is suspect.
	Engine cranks and fires, but will not start	Evaporative emissions purge valve Fuel system Spark plugs Ignition coil failure(s) Harness	For purge valve tests, fuel system tests and ignition system tests, refer to the relevant workshop manual section.
Difficult to start	Difficult to start cold	Check coolant anti-freeze content Battery Crankshaft position (CKP) sensor Exhaust gas recirculation (EGR) valve stuck open Fuel system Evaporative emissions purge valve	For battery information, refer to the relevant workshop manual section. For CKP and harness tests refer to the guided diagnostic routine on the approved diagnostic system. For EGR system tests, fuel system tests and purge valve tests, refer to the relevant workshop manual section.
	Difficult to start hot	Injector leak Fuel system Fuel temperature sensor Intake air temperature (IAT) sensor Mass air flow (MAF) sensor Evaporative emissions purge valve Ignition system	For injector and fuel system tests, refer to the relevant workshop manual section. For fuel temperature sensor, IAT sensor, MAF sensor and purge valve tests refer to the guided diagnostic routines on the approved diagnostic system. For ignition system tests, refer to the relevant workshop manual section.
	Difficult to start after hot soak (vehicle standing after engine has reached operating temperature)	Injector leak Fuel system Fuel temperature sensor IAT sensor MAF sensor Evaporative emissions purge valve Ignition system	For injector and fuel system tests, refer to the relevant workshop manual section. For fuel temperature sensor, IAT sensor, MAF sensor and purge valve tests refer to the guided diagnostic routines on the approved diagnostic system. For ignition system tests, refer to the relevant workshop manual section.
	Engine cranks too fast/slow	Compressions high/low Battery Starting system	Check compressions. For battery information and starting system tests, refer to the relevant workshop manual section.
Engine stalls	Engine stalls soon after start	Breather system disconnected/restricted ECM relay MAF sensor Ignition system Air filter restricted Air leakage Fuel lines	Check the engine breather system. Check the ECM relay operation. For MAF sensor tests refer to the guided diagnostic routines on the approved diagnostic system. For ignition system test, air intake information and fuel line information, refer to the relevant workshop manual section.
	Engine stalls on overrun	ECM relay Throttle position (TP) sensors	Check the ECM relay operation. For TP sensor tests refer to the guided diagnostic routines on the approved diagnostic system.
	Engine stalls at steady speed	ECM relay CKP sensor TP sensors	Check the ECM relay operation. For CKP sensor and TP sensor tests refer to the guided diagnostic routines on the approved diagnostic system.
	Engine stalls with speed control enabled	ECM relay	Check the ECM relay operation.
	Engine stalls when maneuvering	ECM relay TP sensors Additional engine loads (PAS, air conditioning, etc) Transmission malfunction CAN malfunction	Check the ECM relay operation. For TP sensor tests refer to the guided diagnostic routines on the approved diagnostic system. For accessory drive and transmission information, refer to the relevant workshop manual section. Check for CAN fault codes.
Poor driveability	Engine hesitates/poor acceleration	Fuel pump Fuel lines Injector leak Fuel pressure Air leakage TP sensors Throttle motor Ignition system EGR valve stuck HO2 sensors Transmission malfunction Restricted pedal travel (carpet, etc) Accelerator pedal position (APP) sensor	For fuel pump and fuel line information, injector tests and intake system checks, refer to the relevant workshop manual section. For TP sensor and throttle motor tests refer to the guided diagnostic routines on the approved diagnostic system. For ignition system tests and EGR tests, refer to the relevant workshop manual section. Check for DTCs relating to HO2 sensors, refer to the DTC index. For transmission information, refer to the relevant workshop manual section. Check the accelerator pedal travel. For APP sensor tests refer to the guided diagnostic routines on the approved diagnostic system.
	Engine backfires	Fuel pump Fuel lines Air leakage MAF sensor HO2 sensors Ignition system Sticking variable camshaft timing (VCT) hub APP sensor	For fuel pump and fuel line information and intake system, refer to the relevant workshop manual section. For MAF sensor tests refer to the guided diagnostic routines on the approved diagnostic system. Check for DTCs relating to HO2 sensors, refer to the DTC index. For ignition system tests, refer to the relevant workshop manual section. For VCT and APP sensor tests refer to the guided diagnostic routines on the approved diagnostic system.
	Engine surges	Fuel pump Fuel lines MAF sensor Harness TP sensors Throttle motor Ignition system	For fuel pump and fuel line information, refer to the relevant workshop manual section. For MAF sensor, TP sensor and throttle motor tests refer to the guided diagnostic routines on the approved diagnostic system. For ignition system tests, refer to the relevant workshop manual section.
	Engine detonates/knocks	Knock sensor (KS)/circuit malfunction Fuel pump Fuel lines Fuel quality MAF sensor HO2 sensors Air leakage Sticking VCT hub BARO sensor malfunction (internal ECM fault)	For KS circuit tests refer to the guided diagnostic routines on the approved diagnostic system. For fuel pump and fuel line information, refer to the relevant workshop manual section. For MAF sensor tests refer to the guided diagnostic routine on the approved diagnostic system. Check for DTCs relating to HO2 sensors, refer to the DTC index. For intake system, refer to the relevant workshop manual section. For VCT tests refer to the guided diagnostic routines on the approved diagnostic system. Refer to the warranty policy and procedures manual if an ECM is suspect.
	No throttle response	APP sensor malfunction TP sensors Throttle motor	For APP sensor, TP sensor and throttle motor tests refer to the guided diagnostic routines on the approved diagnostic system.
	Speed control inhibited or disabled	Default mode enabled Speed control switch(es) TP sensors CAN fault	Check message center for default message. For speed control switch information, refer to the relevant workshop manual section. For TP sensor tests refer to the guided diagnostic routine on the approved diagnostic system. Check for CAN fault codes.
	Poor throttle response	APP sensor malfunction TP sensors ECT sensor MAF sensor Transmission malfunction Traction control event Air leakage Breather system disconnected/restricted	For APP sensor, TP sensor, ECT sensor and MAF sensor tests refer to the guided diagnostic routines on the approved diagnostic system. For transmission information, intake system checks and breather system checks, refer to the relevant workshop manual section.
	Engine defaults, warning lamp and messages. Refer to the owner handbook	TP sensors MAF sensor ECT sensor Harness	For TP sensor, MAF sensor and ECT sensor tests refer to the guided diagnostic routines on the approved diagnostic system.

DTC index

Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

DTC	Description	Possible causes	Action
C003100	Left Front Wheel Speed Sensor	Invalid data received from ABS wheel speed signal	Check for ABS DTCs. Refer to the relevant workshop manual section.
C003400	Right Front Wheel Speed Sensor	Invalid data received from ABS wheel speed signal	Check for ABS DTCs. Refer to the relevant workshop manual section.
C003700	Left Rear Wheel Speed Sensor	Invalid data received from ABS wheel speed signal	Check for ABS DTCs. Refer to the relevant workshop manual section.
C003A00	Right Rear Wheel Speed Sensor	Invalid data received from ABS wheel speed signal	Check for ABS DTCs. Refer to the relevant workshop manual section.
P001100	Intake (A) Camshaft Position Timing - Over-Advanced (Bank 1)	Cam timing (right-hand bank) has not been set up correctly Timing chain has slipped	Check the engine timing. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P001200	Intake (A) Camshaft Position Timing - Over-Retarded (Bank 1)	Cam timing (right-hand bank) has not been set up correctly Timing chain has slipped	Check the engine timing. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002100	Intake (A) Camshaft Position Timing - Over-Advanced (Bank 2)	Cam timing (left-hand bank) has not been set up correctly Timing chain has slipped	Check the engine timing. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002200	Intake (A) Camshaft Position Timing - Over-Retarded (Bank 2)	Cam timing (left-hand bank) has not been set up correctly Timing chain has slipped	Check the engine timing. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002671	Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)	Variable camshaft timing (VCT) control solenoid circuit range/performance (right-hand bank) - actuator stuck open Oil contamination VCT oil flow fault VCT solenoid fault VCT/Camshaft mechanical failure	Check the oil level and condition, check for adequate oil flow. Check the camshaft and VCT hub. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002677	Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)	Variable camshaft timing (VCT) control solenoid circuit range/performance (right-hand bank) - commanded position not reachable Oil contamination VCT oil flow fault VCT solenoid fault VCT/Camshaft mechanical failure	Check the oil level and condition, check for adequate oil flow. Check the camshaft and VCT hub. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002871	Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)	Variable camshaft timing (VCT) control solenoid circuit range/performance (left-hand bank) - actuator stuck open Oil contamination VCT oil flow fault VCT solenoid fault VCT/Camshaft mechanical failure	Check the oil level and condition, check for adequate oil flow. Check the camshaft and VCT hub. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P002877	Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)	Variable camshaft timing (VCT) control solenoid circuit range/performance (left-hand bank) - commanded position not reachable Oil contamination VCT oil flow fault VCT solenoid fault VCT/Camshaft mechanical failure	Check the oil level and condition, check for adequate oil flow. Check the camshaft and VCT hub. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P003100	HO2S Heater Control Circuit Low (Bank 1, Sensor 1)	Heated 0² sensor heater power supply circuit high resistance Heated 0² sensor heater control circuit high resistance Heated 0² sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P003200	HO2S Heater Control Circuit High (Bank 1, Sensor 1)	Heated 0² sensor heater power supply circuit high resistance Heated 0² sensor heater control circuit high resistance Heated 0² sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P003600	HO2S Heater Control Circuit (Bank 1, Sensor 2)	Catalyst monitor sensor heater control circuit short circuit to ground Catalyst monitor sensor heater control circuit high resistance Catalyst monitor sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P005100	HO2S Heater Control Circuit Low (Bank 2, Sensor 1)	Heated 0² sensor heater power supply circuit high resistance Heated 0² sensor heater control circuit high resistance Heated 0² sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P005200	HO2S Heater Control Circuit High (Bank 2, Sensor 1)	Heated 0² sensor heater power supply circuit high resistance Heated 0² sensor heater control circuit high resistance Heated 0² sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P005600	HO2S Heater Control Circuit (Bank 2, Sensor 2)	Catalyst monitor sensor (left-hand bank) heater control circuit short circuit to ground Catalyst monitor sensor heater control circuit high resistance Catalyst monitor sensor heater failure	For left-hand catalyst monitor sensor heater circuit tests. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P006900	(MAP) - Barometric pressure correlation	Manifold absolute pressure (MAP) sensor failure BARO sensor failure (internal ECM fault)	Check the MAP sensor and circuits. Refer to the electrical guides. Refer to the warranty policy and procedures manual if an ECM is suspect.
P007100	Ambient Air Temperature Sensor Range/Performance	Ambient temperature sensor range performance (stuck)	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P007200	Ambient Air Temperature Sensor Circuit Low	Ambient temperature sensor circuit low input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P007300	Ambient Air Temperature Sensor Circuit High	Ambient temperature sensor circuit high input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P007500	Intake Valve Control Circuit (Bank 1)	Variable camshaft timing (VCT) control circuit (right-hand bank) VCT solenoid valve PWM drive circuit: high resistance VCT solenoid failure	For right-hand VCT circuit tests. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P007600	Intake Valve Control Circuit Low (Bank 1)	Variable camshaft timing (VCT) control circuit low (right-hand bank) VCT solenoid valve PWM drive circuit; short circuit to ground VCT solenoid failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P007700	Intake Valve Control Circuit High (Bank 1)	Variable camshaft timing (VCT) control circuit high (right-hand bank) VCT solenoid valve PWM drive circuit; short circuit to power VCT solenoid failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P008100	Intake Valve Control Circuit (Bank 2)	Variable camshaft timing (VCT) control circuit (left-hand bank) VCT solenoid valve PWM drive circuit: high resistance VCT solenoid failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P008200	Intake Valve Control Circuit Low (Bank 2)	Variable camshaft timing (VCT) control circuit low (left-hand bank) VCT solenoid valve PWM drive circuit; short circuit to ground VCT solenoid failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P008300	Intake Valve Control Circuit High (Bank 2)	Variable camshaft timing (VCT) control circuit high (left-hand bank) VCT solenoid valve PWM drive circuit; short circuit to power VCT solenoid failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P010100	Mass or Volume Air Flow A Circuit	Blocked air cleaner Air intake leak Engine breather leak Mass air flow (MAF) sensor sensing circuit: high resistance, intermittent short circuit to ground MAF sensor supply circuit: high resistance	Check the air cleaner for blockage, etc. Check the air intake system for leaks. Check the engine breather system. Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the relevant workshop manual section.
P010200	Mass or Volume Air Flow A Circuit Low	MAF sensor supply circuit high resistance, short circuit to ground MAF sensor ground circuit high resistance MAF sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P010300	Mass or Volume Air Flow A Circuit High	MAF sensor sensing circuit short circuit to battery MAF sensor return circuit high resistance MAF sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P010600	Manifold Absolute Pressure/BARO Sensor Range/Performance	Intake manifold air leak (loose or missing component) MAP sensor circuit(s) fault MAP sensor failure	Check the intake manifold for security, etc. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P010700	Manifold Absolute Pressure/BARO Sensor Low	MAP sensor circuit: high resistance, short circuit to ground MAP sensor supply circuit: high resistance MAP sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P010800	Manifold Absolute Pressure/BARO Sensor High	MAP sensor return circuit: high resistance MAP sensor sense circuit; short circuit to power MAP sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011123	Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1)	Signal stuck low at engine start IAT sensor circuit(s) high resistance IAT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011124	Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1)	Signal stuck high at engine start IAT sensor circuit(s) high resistance IAT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011129	Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1)	Signal invalid IAT sensor circuit(s) high resistance IAT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011200	Intake Air Temperature Sensor 1 Circuit Low (Bank 1)	Intake air temperature IAT sensor disconnected IAT sensor circuit(s) high resistance IAT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011300	Intake Air Temperature Sensor 1 Circuit High (Bank 1)	IAT sensor circuit(s) short circuit to ground IAT sensor sensing circuit short circuit to power IAT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011623	Engine Coolant Temperature Sensor 1 Circuit Range/Performance	Low coolant level Engine thermostat failure ECT sensor sensing circuit intermittent high resistance ECT sensor failure	Check the coolant level and the thermostat operation (stuck open). Refer to the relevant section of the workshop manual. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011624	Engine Coolant Temperature Sensor 1 Circuit Range/Performance	Low coolant level Engine coolant thermostat failure ECT sensor sensing circuit intermittent high resistance ECT sensor failure	Check the coolant level and the thermostat operation (stuck open). Refer to the relevant section of the workshop manual. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011629	Engine Coolant Temperature Sensor 1 Circuit Range/Performance	Low coolant level Engine coolant thermostat failure ECT sensor sensing circuit intermittent high resistance ECT sensor failure	Check the coolant level and the thermostat operation (stuck open). Refer to the relevant section of the workshop manual. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011700	Engine Coolant Temperature Sensor 1 Circuit Low	ECT sensor disconnected Engine coolant temperature (ECT) sensor sensing circuit high resistance, short circuit to power ECT sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P011800	Engine Coolant Temperature Sensor 1 Circuit High	Engine overheat condition/cooling fan failure ECT sensor wiring short circuit to ground ECT sensor failure	Check the coolant level and the thermostat operation (stuck closed). Check for cooling fan DTCs. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P012100	Throttle/Pedal Position Sensor A Circuit Range/Performance	Throttle position sensor wiring high resistance Throttle position sensor sensing circuits (Throttle position 1 or Throttle position 2) short circuit to power Throttle position sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P012200	Throttle/Pedal Position Sensor A Circuit Low	Throttle position sensor sensing circuit 1 short circuit to ground, high resistance Throttle position sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P012300	Throttle/Pedal Position Sensor A Circuit High	Throttle position sensor sensing circuit (Throttle position1) short circuit to power Throttle position sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P012500	Insufficient Coolant Temp For Closed Loop Fuel Control	Low coolant level Engine thermostat failure ECT sensor sensing circuit intermittent high resistance ECT sensor failure	Check the coolant level and thermostat operation. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P012800	Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)	Contaminated coolant Engine coolant thermostat failure ECT sensor failure ECT sensor DTC may also be flagged	Check the coolant level/condition and thermostat operation. Check for ECT sensor DTCs.
P01301A	O2 Circuit (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) element impedance low Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P01301B	O2 Circuit (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) element impedance low Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013100	O2 Circuit (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) element impedance high Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013200	O2 Circuit High Voltage (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) signal circuit short circuit to power Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013300	O2 Circuit Slow Response (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) to ECM wiring high resistance Exhaust leak HO2 sensor failure	Check the exhaust system for leaks. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013400	O2 Circuit No Activity Detected (Bank 1, Sensor 1)	Heated 0² sensor (right-hand bank) slow activation	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013700	O2 Circuit Low Voltage (Bank 1, Sensor 2)	Catalyst monitor sensor (right-hand bank) to ECM wiring high resistance Catalyst monitor sensor short circuit to ground Catalyst monitor sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013800	O2 Circuit High Voltage (Bank 1, Sensor 2)	Catalyst monitor sensor (right-hand bank) sensing circuit short circuit to power Catalyst monitor sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013900	O2 Circuit Slow Response (Bank 1, Sensor 2)	Catalyst monitor sensor (right-hand bank) slow response	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P014000	O2 Circuit Slow Response (Bank 1, Sensor 2)	Catalyst monitor (right-hand bank) to ECM wiring high resistance Catalyst monitor sensing circuit short circuit to power Catalyst monitor short circuit to ground	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P014100	O2 Heater Circuit (Bank 1, Sensor 2)	Catalyst monitor sensor (right-hand bank) heater control circuit high resistance Catalyst monitor sensor heater failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P01501A	O2 Circuit (Bank 2, Sensor 1)	Circuit (left-hand bank) resistance below threshold Element impedance low Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P01501B	O2 Circuit (Bank 2, Sensor 1)	Circuit (left-hand bank) resistance above threshold Element impedance high Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015100	O2 Circuit Low Voltage (Bank 2, Sensor 1)	Heated 0² sensor (left-hand bank) signal circuit high resistance Heated 0² sensor signal circuit short circuit to ground Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015200	O2 Circuit High Voltage (Bank 2, Sensor 1)	Heated 0² sensor (left-hand bank) signal circuit short circuit to power Heated 0² sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015300	O2 Circuit Slow Response (Bank 2, Sensor 1)	Heated 0² sensor (left-hand bank) to ECM wiring high resistance Exhaust leak Heated 0² sensor failure	Check the exhaust system for leaks. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015400	O2 Circuit No Activity Detected (Bank 2, Sensor 1)	Heated 0² sensor (left-hand bank) slow activation	Check the HO2S and circuits. Refer to the electrical guides. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015700	O2 Circuit Low Voltage (Bank 2, Sensor 2)	Catalyst monitor sensor (left-hand bank) to ECM wiring high resistance Catalyst monitor sensor short circuit to ground Catalyst monitor sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015800	O2 Circuit High Voltage (Bank 2, Sensor 2)	Catalyst monitor sensor (left-hand bank) sensing circuit short circuit to power Catalyst monitor sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P015900	O2 Circuit Slow Response (Bank 2, Sensor 2)	Catalyst monitor sensor (left-hand bank) slow response	Check the catalyst monitor sensor and circuits. Refer to the electrical guides.
P016000	O2 Circuit No Activity Detected (Bank 2, Sensor 2)	Catalyst monitor (left-hand bank) to ECM wiring high resistance Catalyst monitor sensing (left-hand bank) circuit short circuit to power Catalyst monitor short circuit to ground	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P016100	O2 Heater Circuit (Bank 2, Sensor 2)	Catalyst monitor sensor (left-hand bank) heater control circuit malfunction	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P017000	Fuel Trim (Bank 1)	Fuel adaption Bank 1 exceeds threshold	Check for other DTCs and rectify as necessary. Clear DTC and retest.
P017100	System Too Lean (Bank 1)	Air intake leak between MAF sensor and cylinder head MAF sensor fault (low intake air flow) Fuel filter/system restriction Low fuel pressure Fuel injector restriction Exhaust leak (before catalyst) Evaporative emission system fault	Check the intake air system for leaks, etc. refer to the relevant workshop manual section. Check the fuel system for restrictions, DTCs, etc. Check the exhaust system for leaks, etc. Check for evaporative emission DTCS.
P017200	System Too Rich (Bank 1)	Restricted air filter High fuel pressure Leaking fuel injector(s) Oil contaminated with fuel (too many cold starts with vehicle subsequently not getting hot enough for long enough) MAF sensor fault Evaporative emission system fault	Check the intake air system for restrictions. Check the fuel system for leaks and check the fuel pressure. Check the fuel injectors. Check for fuel system DTCs. Check the oil for contamination/grade/quality. Refer to the relevant section of the workshop manual. Check for MAF sensor and evaporative emission DTCs.
P017300	Fuel Trim (Bank 2)	Fuel adaption Bank 1 exceeds threshold	Check for other DTCs and rectify as necessary. Clear DTC and retest.
P017400	System Too Lean (Bank 2)	Air intake leak between MAF sensor and cylinder head MAF sensor fault (low intake air flow) Fuel filter/system restriction Low fuel pressure Fuel injector restriction Exhaust leak (before catalyst) Evaporative emission system fault	Check the intake air system for leaks, etc. Check the fuel system for restrictions, DTCs, etc. Check the exhaust system for leaks, etc. Refer to the relevant section of the workshop manual. Check for evaporative emission DTCS.
P017500	System too Rich (Bank 2)	Restricted air filter High fuel pressure Leaking fuel injector(s) Oil contaminated with fuel (too many cold starts with vehicle subsequently not getting hot enough for long enough) MAF sensor fault Evaporative emission system fault	Check the intake air system for restrictions, etc. Check the fuel system for leaks, DTCs, etc. Check the oil condition. Refer to the relevant section of the workshop manual. Check for MAF sensor and evaporative emission DTCs.
P019623	Engine Oil Temperature Sensor Range/Performance	Oil temperature sensor sensing circuit intermittent high resistance Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019624	Engine Oil Temperature Sensor Range/Performance	Oil temperature sensor sensing circuit intermittent high resistance Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P018124	Fuel Temperature Sensor A Circuit Range/Performance	Fuel temperature sensor sensing circuit high resistance, short circuit to power Fuel temperature sensor ground circuit high resistance Fuel temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P018129	Fuel Temperature Sensor A Circuit Range/Performance	Fuel temperature sensor sensing circuit high resistance, short circuit to ground, short circuit to power Fuel temperature sensor ground circuit high resistance Fuel temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P018200	Fuel Temperature Sensor A Circuit Low	Fuel temperature sensor sensing circuit short circuit to ground Fuel temperature sensor ground circuit short circuit Fuel temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P018300	Fuel Temperature Sensor A Circuit High	Fuel temperature sensor sensing circuit high resistance, short circuit to power Fuel temperature sensor ground circuit high resistance Fuel temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019623	Engine Oil Temperature Sensor Range/Performance	Oil temperature sensor sensing circuit intermittent high resistance Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019624	Engine Oil Temperature Sensor Range/Performance	Oil temperature sensor sensing circuit intermittent high resistance Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019629	Oil temperature sensor circuit range/performance - signal invalid	Oil temperature sensor sensing circuit intermittent high resistance Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019700	Engine Oil Temperature Sensor Circuit Low	Oil temperature sensor sensing circuit short circuit to ground Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P019800	Engine Oil Temperature Sensor Circuit High	Oil temperature sensor sensing circuit high resistance, short circuit to power Oil temperature sensor failure	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020100	Cylinder 1 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020200	Cylinder 2 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020300	Cylinder 3 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020400	Cylinder 4 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020500	Cylinder 5 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020600	Cylinder 6 Injector Circuit / Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020700	Cylinder 7 Injector Circuit/Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P020800	Cylinder 8 Injector Circuit/Open	Injector disconnected Injector harness wiring high resistance, short circuit to ground Injector failure	For fuel system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022200	Throttle/Pedal Position Sensor/Switch B Circuit Low	Throttle position sensor circuit 2 low input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022300	Throttle/Pedal Position Sensor/Switch B Circuit High	Throttle position sensor circuit 2 high input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022628	Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance	Throttle position sensor circuit range monitoring error	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022662	Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance	Throttle position sensor circuit range monitoring error	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022700	Throttle/Pedal Position Sensor/Switch C Circuit Low	Throttle position sensor circuit 1 short circuit to ground Throttle position sensor circuit 1 high resistance	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P022800	Throttle/Pedal Position Sensor/Switch C Circuit High	Throttle position sensor circuit 1 short circuit to power	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P030000	Random Misfire Detected	ECM to ignition coil primary circuit faults (cylinder misfire detected DTCs also logged) Ignition coil failure Spark plug failure/fouled/incorrect gap Fuel delivery pressure (low/high) Fuel injector circuit fault(s) (injector DTCs also logged) Fuel injectors restricted/leaking Fuel injectors continuously open Fuel contamination Cylinder compression low Worn camshaft/broken valve springs Valve clearance adjustment	Check for ignition coil DTCs. Check the condition of the spark plugs and the gaps. Check the fuel pressure. Check for fuel injector DTCs. Check the fuel for contamination/grade/quality. Check the cylinder compressions, check the valve clearances, check the condition of the camshaft and valve springs. Refer to the relevant section of the workshop manual.
P030100	Cylinder 1 Misfire Detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030200	Cylinder 2 Misfire Detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030300	Cylinder 3 Misfire Detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030400	Cylinder 4 misfire detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030500	Cylinder 5 misfire detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030600	Cylinder 6 misfire detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030700	Cylinder 7 misfire detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P030800	Cylinder 8 misfire detected	Refer to P030000 possible sources	For ignition coil tests, refer to the guided diagnostic routine for this code on the approved diagnostic system. Check the spark plug condition and gap. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P031300	Misfire Detected With Low Fuel	Misfire detected during low fuel level condition	Add fuel, clear the DTC and test for normal operation.
P031600	Misfire Detected On Startup (First 1000 Revolutions)	Misfire detected on first 1000 revs Refer to P030000 possible sources	Carry out the tests indicated for a normal misfire code, but on a cold engine.
P032700	Knock Sensor 1 Circuit Low (Bank1)	Poor right-hand sensor contact with the cylinder block Knock sensor to ECM sense circuit short circuit to ground Knock sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P032800	Knock Sensor 1 Circuit High (Bank 1)	Poor right-hand sensor contact with the cylinder block Knock sensor sense circuit high resistance, short circuit to power Knock sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P033200	Knock Sensor 2 Circuit Low (Bank 2)	Poor left-hand sensor contact with the cylinder block Knock sensor sense circuit short circuit to ground Knock sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P033300	Knock Sensor 2 Circuit High (Bank 2)	Poor left-hand sensor contact with the cylinder block Knock sensor sense circuit high resistance, short circuit to power Knock sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P033592	Crankshaft Position Sensor A Circuit	Crankshaft position (CKP) sensor gap incorrect/foreign matter on sensor face or damaged teeth on rotor CKP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CKP sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P033594	Crankshaft Position Sensor A Circuit	Crankshaft position (CKP) sensor gap incorrect/foreign matter on sensor face or damaged teeth on rotor CKP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CKP sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P033600	Crankshaft position (CKP) sensor A circuit range/performance	CKP sensor gap incorrect/ foreign matter on sensor face /damaged teeth on rotor CKP sensor sensing circuit intermittent high resistance, short circuit to ground, short circuit to power CKP sensor failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034092	Camshaft Position Sensor A Circuit (Bank 1 or single sensor)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CMP sensor 1 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034094	Camshaft Position Sensor A Circuit (Bank 1 or single sensor)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CMP sensor 1 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034100	Camshaft Position Sensor A Circuit Range/Performance (Bank 1 or single sensor)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CMP sensor 1 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034592	Camshaft Position Sensor A Circuit (Bank 2)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CMP sensor 2 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034594	Camshaft Position Sensor A Circuit (Bank 2)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance short circuit to ground, short circuit to power CMP sensor 2 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P034600	Camshaft Position Sensor A Circuit Range/Performance (Bank 2)	Camshaft position sensor (CMP) sensor gap incorrect/ foreign matter on sensor face /damaged rotor CMP sensor sensing circuit high resistance, short circuit to ground, short circuit to power CMP sensor 2 failure	Check the installation of the sensor. Refer to the relevant workshop manual section. Check for debris/damage on the sensor face and rotor. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035100	Ignition Coil A Primary/Secondary Circuit	ECM to ignition module/coil drive circuit high resistance, short circuit to ground Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035200	Ignition Coil B Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035300	Ignition Coil C Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035400	Ignition Coil D Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035500	Ignition Coil E Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035600	Ignition Coil F Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035700	Ignition Coil G Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P035800	Ignition Coil H Primary/Secondary Circuit	ECM to ignition module/coil drive circuit short circuit to ground, high resistance Ignition module/coil ground circuit high resistance Ignition module/coil battery supply circuit high resistance (including relay, if installed)	Refer to the electrical guides and check the ignition coil circuits. For ignition system tests, refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P040100	Exhaust Gas Recirculation A Flow Insufficient Detected	EGR pipe blocked EGR valve incorrectly installed or loose EGR valve stuck closed/blocked EGR valve failure	Check the EGR pipes. Check the EGR valve installation. For emission system tests. Refer to the relevant workshop manual section.
P042000	Catalyst System Efficiency Below Threshold (Bank 1)	Catalyst failure due to overheating damage caused by misfire and/or lean combustion Catalyst failure due to poisoning caused by excessive oil consumption and/or contaminated fuel	Check the catalyst condition. Refer to the warranty policy and procedures manual if the catalyst is suspect.
P043000	Catalyst System Efficiency Below Threshold (Bank 2)	Catalyst failure due to overheating damage caused by misfire and/or lean combustion Catalyst failure due to poisoning caused by excessive oil consumption and/or contaminated fuel	Check the catalyst condition. Refer to the warranty policy and procedures manual if the catalyst is suspect.
P044100	Evaporative Emission System Incorrect Purge Flow	Evaporative emission (EVAP) canister purge valve pipe restricted/leaking Canister vent restricted Purge valve failure	Check the charcoal canister pipework and vent for integrity. Refer to the relevant workshop manual section.
P044200	Evaporative Emission System Leak Detected (small leak)	Fuel filler cap not correctly installed Fuel filler cap seal faulty Evaporative emission system leak (canister, pipes, etc) Fuel tank leak Canister dynamic monitoring of tank leakage (DMTL) valve fault	Refer to the relevant workshop manual section.
P044700	Evaporative Emission System Vent Control Circuit Open	EVAP DMTL valve circuit short circuit to ground	Refer to the electrical guides and check the DMTL valve circuit. Repair/renew as necessary. Refer to the relevant workshop manual section.
P044800	Evaporative Emission System Vent Control Circuit Shorted	EVAP DMTL valve circuit short circuit to power	Refer to the electrical guides and check the DMTL valve circuit. Repair/renew as necessary. Refer to the relevant workshop manual section.
P045500	Evaporative Emission System Leak Detected (gross leak/no flow)	Fuel filler cap not installed Fuel filler cap seal faulty/missing Evaporative emission system leak (canister, pipes, etc) Fuel tank leak DMTL valve fault	Check the fuel filler cap and seal, check the canister, pipes, etc. Check the fuel tank for leaks, etc. Refer to the relevant workshop manual section.
P045800	Evaporative Emission System Purge Control Valve Circuit Low	Purge valve control circuit short circuit to ground Purge valve control circuit high resistance EVAP canister purge valve failure	Refer to the electrical guides and check the DMTL valve circuit. Repair/renew as necessary. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P045900	Evaporative Emission System Purge Control Valve Circuit High	Purge valve control circuit short circuit to power	Refer to the electrical guides and check the DMTL valve circuit. Repair/renew as necessary. Refer to the relevant workshop manual section. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P046129	Fuel Level Sensor A Circuit Range/Performance	Fuel level sensor circuits intermittent short circuit or high resistance Fuel level sensor failure	Refer to the electrical guides and check the fuel gauge sender unit circuit. Repair/renew as necessary.
P04612F	Fuel Level Sensor A Circuit Range/Performance	Fuel level sensor circuits intermittent short circuit or high resistance Fuel level sensor failure	Refer to the electrical guides and check the fuel gauge sender unit circuit. Repair/renew as necessary.
P046200	Fuel Level Sensor A Circuit Low	Fuel level sensor circuits intermittent short circuit to ground or high resistance Fuel level sensor failure	Refer to the electrical guides and check the fuel gauge sender unit circuit. Repair/renew as necessary.
P046300	Fuel Level Sensor A Circuit High	Fuel level sensor circuits intermittent short circuit to power Fuel level sensor failure	Refer to the electrical guides and check the fuel gauge sender unit circuit. Repair/renew as necessary.
P048014	Fan 1 Control Circuit	Viscous fan speed sensor circuit high resistance	Refer to the electrical guides and check the viscous fan speed sensor circuit. Repair/renew as necessary.
P048015	Fan 1 Control Circuit	Viscous fan control circuit short circuit to power Viscous fan control circuit short circuit to ground	Refer to the electrical guides and check the viscous fan speed sensor circuit. Repair/renew as necessary.
P048300	Fan Performance	Cooling fan control circuit short circuit to ground Cooling fan control circuit short circuit to power Cooling fan control circuit high resistance Cooling fan fault	Check the cooling fan operation. Refer to the electrical guides and check the fan circuit, Repair/renew as necessary. Clear the DTCs and test for normal operation. Check the pulse width modulated (PWM) signal and check the motor for sticking. Repair/renew as necessary.
P048900	Exhaust Gas Recirculation Control Circuit Low	EGR valve power supply circuit: high resistance EGR valve power supply circuit short circuit to ground	Refer to the relevant workshop manual section.
P049000	Exhaust Gas Recirculation Control Circuit High	EGR valve drive circuit short circuit to power	Refer to the relevant workshop manual section.
P049300	Fan Overspeed (clutch locked)	Seized viscous coupling Fan speed sensor failure	Check that the viscous coupling turns independently of the fan. Refer to the electrical guides and check the viscous fan speed sensor circuit. Repair/renew as necessary.
P050000	Vehicle Speed Sensor A	Vehicle speed invalid signal received over CAN	Check for wheel speed sensor DTCs. Investigate and repair any codes stored in other CAN modules. Clear the codes and retest.
P050162	Vehicle Speed Sensor A Range/Performance	Vehicle speed range/performance	Check for wheel speed sensor DTCs. Investigate and repair any codes stored in other CAN modules. Clear the codes and retest.
P050164	Vehicle Speed Sensor A Range/Performance	Vehicle speed range/performance	Check for wheel speed sensor DTCs. Investigate and repair any codes stored in other CAN modules. Clear the codes and retest.
P050429	Brake Switch A / B Correlation	Brake switch malfunction (sub-processor)	Check for ABS DTCs, check the brake switch and circuits (refer to the electrical guides). Clear the DTCs and test for normal operation.
P050464	Brake Switch A / B Correlation	Brake switch malfunction	Check for ABS DTCs, check the brake switch and circuits (refer to the electrical guides). Clear the DTCs and test for normal operation.
P050600	Idle Air Control System RPM Lower Than Expected	Air intake restriction Accessory drive overload (defective/seized component)	Check the air intake system, accessory drive belt and components. Refer to the relevant workshop manual section.
P050700	Idle Air Control System RPM Higher Than Expected	Intake air leak between the mass air flow (MAF) sensor and throttle Intake air leak between throttle and engine Engine crankcase breather leak	Check the air intake system. Check the engine breather system. Refer to the relevant workshop manual section.
P051216	Starter Request Circuit	Crank request circuit low input	Refer to the electrical guides and check the starter circuit. Repair/renew as necessary.
P051217	Starter Request Circuit	Crank request circuit high input	Refer to the electrical guides and check the starter circuit. Repair/renew as necessary.
P051300	Incorrect Immobilizer Key	Security key invalid	Program keys using the approved diagnostic system. Investigate and repair any codes stored in other CAN modules. Clear the codes and retest.
P052500	Cruise Control Servo Control Circuit Range/Performance	Internal control module software corruption	Refer to the warranty policy and procedures manual if a module is suspect.
P052616	Fan Speed Sensor Circuit	Viscous fan speed sensor low	Refer to the electrical guides and check the viscous fan speed sensor circuit.
P052617	Fan speed sensor circuit	Viscous fan speed sensor high	Refer to the electrical guides and check the viscous fan speed sensor circuit.
P056000	System Voltage	Battery back-up malfunction Battery voltage low Battery ground cable: high resistance Battery connections loose/corroded Battery current drain	Check the battery condition and state of charge.
P056200	System Voltage Low	Battery voltage low Battery ground cable: high resistance Battery connections loose/corroded Battery current drain	Check the battery condition and state of charge.
P056300	System Voltage High	System boosted from high voltage Battery voltage high Generator over charge condition	Check if the vehicle has been jump-started. Check the battery condition and state of charge.
P057400	Cruise Control System - Vehicle Speed Too High	Incorrect speed sensor signal	Check for ABS DTCs. Refer to the relevant workshop manual section DTC index.
P057600	Cruise Control Input Circuit Low	Speed control switch short circuit to ground Speed control switch high resistance	Refer to the electrical guides and check the cruise control circuit between the ECM and switch. Check the switch operation and renew/renew as necessary.
P057700	Cruise Control Input Circuit High	Speed control switch short circuit to power	Refer to the electrical guides and check the cruise control circuit between the ECM and switch. Check the switch operation and renew/renew as necessary.
P057800	Cruise Control Multi-Function Input A Circuit Stuck	Speed control multi-function input A circuit high resistance Speed control multi-function input A circuit; short circuit to ground Speed control multi-function input A circuit; short circuit to power Speed control switch stuck	Refer to the electrical guides and check the cruise control circuit between the ECM and switch. Check the switch operation and renew/renew as necessary.
P057900	Cruise Control Multi-Function Input A Circuit Range/Performance	Speed control multi-function input A circuit high resistance Speed control multi-function input A circuit; short circuit to ground Speed control multi-function input A circuit; short circuit to power Speed control switch stuck	Refer to the electrical guides and check the cruise control circuit between the ECM and switch. Check the switch operation and renew/renew as necessary.
P058500	Cruise Control Multi-Function Input A / B Correlation	Cruise control acceleration monitor fault	Check for other DTCs and Repair/renew those first. Clear this DTC and retest.
P060143	Internal Control Module Memory Check Sum Error	Transmission control module (TCM) Internal control module memory check sum error - special memory failure	Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P060145	Internal Control Module Memory Check Sum Error	Transmission control module (TCM) internal control module memory check sum error - program memory failure	Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P060442	Internal Control Module Random Access Memory (RAM) Error	ECM internal control module RAM error	Refer to the warranty policy and procedures manual if a module is suspect.
P060443	Internal Control Module Random Access Memory (RAM) Error	ECM general memory failure	Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P060444	Internal Control Module Random Access Memory (RAM) Error	ECM shut off RAM test - special memory failure	Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P060445	Internal Control Module Random Access Memory (RAM) Error	ECM RAM check sum - data memory failure	Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P060542	Internal Control Module Read Only Memory (ROM) Error	TCM - general memory failure ROM checksum	Clear DTC and retest. If the problem persists, renew the TCM. Refer to the warranty policy and procedures manual if a module is suspect.
P060543	Internal Control Module Read Only Memory (ROM) Error	TCM - shut off ROM test	Clear DTC and retest. If the problem persists, renew the TCM. Refer to the warranty policy and procedures manual if a module is suspect.
P060544	Internal Control Module Read Only Memory (ROM) Error	TCM - initial ROM test	Clear DTC and retest. If the problem persists, renew the TCM. Refer to the warranty policy and procedures manual if a module is suspect.
P060545	Internal Control Module Read Only Memory (ROM) Error	TCM - continuous ROM test	Clear DTC and retest. If the problem persists, renew the TCM. Refer to the warranty policy and procedures manual if a module is suspect.
P060546	Internal Control Module Read Only Memory (ROM) Error	TCM - continuous ROM test	Clear DTC and retest. If the problem persists, renew the TCM. Refer to the warranty policy and procedures manual if a module is suspect.
P060548	Internal Control Module Read Only Memory (ROM) Error	ECM circuits short circuit to ground ECM circuits short circuit to power ECM circuits high resistance TCM - shut off ROM test - supervision software fault	Check the ECM circuits. Refer to the electrical guides. Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, suspect the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060601	Control Module Processor	PCM/ECM processor controller test - general electrical failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060604	Control Module Processor	PCM/ECM processor error capturing instructions	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060605	Control Module Processor	PCM/ECM processor scheduling sequence check - system programming failures	Program the module using the approved diagnostic system.
P060641	Control Module Processor	PCM/ECM processor watch dog timer fault - general checksum failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060642	Control Module Processor	PCM/ECM processor error capturing instructions - general memory failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060643	Control Module Processor	PCM/ECM processor duplication memory fault - special memory failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060644	Control Module Processor	PCM/ECM processor duplication memory fault - data memory failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060645	Control Module Processor	PCM/ECM processor detection of write to internal ROM - program memory failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060646	Control Module Processor	PCM/ECM processor detection of write to internal ROM - calibration/parameter memory failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060647	Control Module Processor	PCM/ECM processor watch dog timer fault/processor fault	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060648	Control Module Processor	PCM/ECM processor scheduling sequence check/processor - supervision software failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060649	Control Module Processor	PCM/ECM processor controller test/processor - internal electronic failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060700	Control Module Performance	ECM event information - CPU watch dog	Check the ECM circuits and connectors. Refer to the electrical guides. Clear the DTC. Cycle the ignition, allow power latch and retest. If the DTC resets, suspect the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060D00	Internal Control Module Accelerator Pedal Position Performance	ECM internal communication error	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060E62	Internal Control Module Throttle Position Performance	Throttle motor amplifier failure for valve sensor malfunction - ECM internal signal compare failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P060E64	Internal Control Module Throttle Position Performance	Throttle position communication - ECM internal signal plausibility failure	Clear DTC and retest. If the problem persists, renew the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P061000	Control Module Vehicle Options Error	Car configuration file (CCF) settings mismatch	Configure the module using the approved diagnostic system.
P061600	Starter Relay Circuit Low	Starter relay drive circuit short circuit to ground Starter relay drive circuit high resistance Starter relay failure	Check the starter relay operation. Refer to the electrical guides and check the starter relay circuit. Repair/renew as necessary.
P061700	Starter Relay Circuit High	Starter relay drive circuit short circuit to battery Starter relay failure	Check the starter relay operation. Refer to the electrical guides and check the starter relay circuit. Repair/renew as necessary.
P061A00	Internal Control Module Torque Performance	Pedal follower error	Retrieve the flight recorder data using the approved diagnostic system and the customer statement relating to the concern. Check and Repair/renew other DTCs first. If this code still sets, contact the technical help desk.
P061A29	Internal Control Module Torque Performance	Absolute engine torque calculation failure - sub-processor	Retrieve the flight recorder data using the approved diagnostic system and the customer statement relating to the concern. Check and Repair/renew other DTCs first. If this code still sets, contact the technical help desk.
P061A64	Internal Control Module Torque Performance	Absolute engine torque calculation failure	Retrieve the flight recorder data using the approved diagnostic system and the customer statement relating to the concern. Check and Repair/renew other DTCs first. If this code still sets, contact the technical help desk.
P061B29	Internal Control Module Torque Calculation Performance	Internal control module torque calculation performance	Retrieve the flight recorder data using the approved diagnostic system and the customer statement relating to the concern. Check and Repair/renew other DTCs first. If this code still sets, contact the technical help desk.
P061B64	Internal Control Module Torque Calculation Performance	Internal control module torque calculation performance	Retrieve the flight recorder data using the approved diagnostic system and the customer statement relating to the concern. Check and Repair/renew other DTCs first. If this code still sets, contact the technical help desk.
P062000	Generator Control Circuit	Generator failure	Refer to the relevant workshop manual section DTC index.
P062500	Generator Field Terminal Circuit Low	Voltage sense circuit high resistance Generator B+ circuit high resistance/intermittent Generator monitor circuit short circuit to ground	Check the main charging circuit fuse. Check the charging voltage. Check the charging system circuits. Refer to the electrical guides. If no fault is found in the circuits, install a new generator. Refer to the relevant workshop manual section. Clear the DTCs and test for normal operation.
P062600	Generator Field Terminal Circuit High	Generator connector loose/not connected Generator monitor circuit short circuit to power Generator monitor circuit high resistance	Check the charging voltage. Check the charging system circuits. Refer to the electrical guides. If no fault is found in the circuits, install a new generator. Refer to the relevant workshop manual section. Clear the DTCs and test for normal operation.
P062800	Fuel Pump A Control Circuit Low	Fuel pump control circuit short circuit to ground Fuel pump control circuit high resistance Fuel pump relay fault	Refer to the electrical guides and check the fuel pump circuits. Activate the relay and listen for an audible 'click'. Repair/renew as necessary. Clear the DTCs and test for normal operation.
P062900	Fuel Pump A Control Circuit High	Fuel pump control circuit short circuit to power Fuel pump relay fault	Refer to the electrical guides and check the fuel pump circuits. Activate the relay and listen for an audible 'click'. Repair/renew as necessary. Clear the DTCs and test for normal operation.
P063000	VIN Not Programmed or Incompatible - ECM/ECM	VIN not programmed VIN incompatible with vehicle specification	Configure the module using the approved diagnostic system.
P063305	Immobilizer Key Not Programmed - ECM/PCM	Security target ID transfer process failed	Program the key using the approved diagnostic system.
P063355	Immobilizer Key Not Programmed - ECM/PCM	Security no target in EMS	Program the module using the approved diagnostic system.
P063422	PCM / ECM / TCM Internal Temperature A Too High	ECM internal temperature too high E box cooling fan obstruction E box cooling fan operation ECM internal sensor error	Consider atmospheric and customer driving conditions before carrying out any other action. Check the E box cooling fan function. Refer to the electrical guides and check the ECM circuits. Using a datalogger function, check the ECM temperature. If the temperature value is greater than 130°C (266°F) suspect the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P063424	PCM / ECM / TCM Internal Temperature A Too High	ECM internal temperature too high E box cooling fan obstruction E box cooling fan operation ECM internal sensor error	Consider atmospheric and customer driving conditions before carrying out any other action. Check the E box cooling fan function. Refer to the electrical guides and check the ECM circuits. Using a datalogger function, check the ECM temperature. If the temperature value is greater than 130°C (266°F) suspect the ECM. Refer to the warranty policy and procedures manual if a module is suspect.
P066800	PCM / ECM / TCM Internal Temperature Sensor A Circuit Low	ECM temperature sensor circuit short circuit to ground	Clear the DTC, cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P066900	PCM / ECM / TCM Internal Temperature Sensor A Circuit High	TCM temperature sensor circuit short circuit to power	Clear the DTC, cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if a module is suspect.
P068700	ECM/PCM Power Relay Control Circuit High	ECM control relay malfunction	Check the ECM relay and circuit. Refer to the electrical guides.
P069500	Fan 3 Control Circuit Low	E box fan circuit short circuit to ground	Check the E box fan operation and circuit. Refer to the electrical guides.
P069600	Fan 3 Control Circuit High	E box fan circuit short circuit to power	Check the E box fan operation and circuit. Refer to the electrical guides.
P070000	Transmission Control System (MIL Request)	Transmission fault	Check for other DTCs and rectify those first. Clear this DTC and retest.
P085100	Park / Neutral Switch Input Circuit Low	Park/Neutral switch circuit short to ground	Check the switch and circuits. Refer to the electrical guides and repair/renew as necessary. Clear the DTCs and test for normal operation.
P085200	Park / Neutral Switch Input Circuit High	Park/Neutral switch circuit short to power	Check the switch and circuits. Refer to the electrical guides and repair/renew as necessary. Clear the DTCs and test for normal operation.
P131500	Persistent Misfire	ECM to ignition coil primary circuit fault (cylinder misfire detected DTC also flagged) Ignition coil failure Spark plug failure/fouled/incorrect gap Fuel delivery pressure low Fuel injector circuit fault(s) (injector DTCs also flagged) Cylinder compression low	For ignition coil tests, refer to the coil failure DTCs in this index. Check the spark plug conditions and gaps. Check the fuel pressure, check for fuel injector DTCs and refer to the relevant workshop manual section.
P131600	Injector Driver Module Codes Detected	Engine misfire - injector driver module codes detected	Refer to the warranty policy and procedures manual if a module is suspect.
P136700	Ignition Spare	Ignition coil group A monitoring circuit to ECM high resistance, short circuit to ground, short circuit to power Ignition module/coils ground circuit fault, right hand bank	Refer to the electrical guides and check the ignition monitoring circuit between the ignition coils and ECM. Repair as necessary. For ignition coil tests, refer to the coil failure DTCs in this index.
P136800	Ignition Spare	Ignition coil group B monitoring circuit to ECM high resistance, short circuit to ground, short circuit to power Ignition module/coils ground circuit fault left hand bank	Refer to the electrical guides and check the ignition monitoring circuit between the ignition coils and ECM. Repair as necessary. For ignition coil tests, refer to the coil failure DTCs in this index.
P160300	EEPROM Malfunction	ECM fault	Refer to the warranty policy and procedure manual if an ECM is suspect.
P210129	Throttle Actuator A Control Motor Circuit Range/Performance	Jammed throttle blade, gearing or motor	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P210162	Throttle Actuator A Control Motor Circuit Range/Performance	Jammed throttle blade, gearing or motor	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P210164	Throttle Actuator A Control Motor Circuit Range/Performance	Jammed throttle blade, gearing or motor	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P210177	Throttle Actuator A Control Motor Circuit Range/Performance	Jammed throttle blade, gearing or motor	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P210329	Throttle Actuator A Control Motor Circuit High	Throttle Actuator control circuit short circuit to power ECM fault	Check the electric throttle unit and circuits. Refer to the electrical guides. Clear the DTCs and test for normal operation. Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedure manual if an ECM is suspect.
P210364	Throttle Actuator A Control Motor Circuit High	Control circuit short circuit to power ECM fault	Check the electric throttle unit and circuits. Refer to the electrical guides. Clear the DTCs and test for normal operation. Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedure manual if an ECM is suspect.
P210500	Throttle Motor Control System - Forced Engine Shutdown	Throttle MIL request due to fuel cut	Check for DTCs indicating the reason for the fuel cut. Follow the action indicated for those DTCs.
P210629	Throttle Actuator Control System - Forced Limited Power	Intended reduced availability fault (limp home)	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P210664	Throttle Actuator Control System - Forced Limited Power	Intended reduced availability fault (limp home)	Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P211800	Throttle Actuator Control Motor Current Range/Performance	Throttle motor over current condition detected ECM fault	Refer to the electrical guides and check the wiring between the ECM and throttle actuator. Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedures manual if an ECM is suspect.
P211900	Throttle Actuator Control Throttle Body Range/Performance	Throttle spring faulty	Check the throttle return spring on the throttle body. Repair/renew as necessary. Check for fuel charging DTCs and a message in the instrument cluster. Rectify as necessary. If the problem persists, renew the throttle body. Refer to the relevant workshop manual section.
P212200	Throttle/Pedal Position Sensor/Switch D Circuit	Throttle position sensor circuit 2 low input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P212300	Throttle/Pedal Position Sensor/Switch D Circuit High	Throttle position sensor circuit 2 high input	Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P213529	Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation	Driver demand sensor - circuit 1 and 2 range/performance - sub-processor	Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedures manual if an ECM is suspect.
P213564	Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation	Driver demand sensor - circuit 1 and 2 range/performance - sub-processor	Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedures manual if an ECM is suspect.
P222800	Barometric Pressure Sensor A Circuit Low	Barometric sensor failure (internal ECM fault)	Clear the DTC, cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if an ECM is suspect.
P222900	Barometric Pressure Sensor A Circuit High	Barometric sensor failure (internal ECM fault)	Clear the DTC, cycle the ignition, allow power latch and retest. If the DTC resets, refer to the warranty policy and procedures manual if an ECM is suspect.
P240100	Evaporative Emission System Leak Detection Pump Control Circuit Low	Diagnostic monitoring of tank leaks (DMTL) pump circuit(s) short circuit to ground DMTL pump circuit(s) high resistance	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P240200	Evaporative Emission System Leak Detection Pump Control Circuit High	DMTL pump circuit(s) short circuit to power	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P240429	Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance	DMTL reference leak	Check the evaporative emission system for serviceability and leaks. Check the DMTL pump and circuits. Refer to the electrical guides. Complete a DMTL test. Refer to the relevant workshop manual section.
P24042F	Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance	DMTL signal erratic	Check the DMTL pump and circuits. Refer to the electrical guides. Refer to the relevant workshop manual section.
P240500	Evaporative Emission System Leak Detection Pump Sense Circuit Low	DMTL pump circuit reference circuit low	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P240600	Evaporative Emission System Leak Detection Pump Sense Circuit High	DMTL pump circuit reference circuit high	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P240B00	Evaporative Emission System Leak Detection Pump Heater Circuit Low	DMTL heater control circuit low	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P240C00	Evaporative Emission System Leak Detection Pump Heater Circuit High	DMTL heater control circuit high	Refer to the electrical guides and check the wiring between the ECM and DMTL pump. Repair as necessary.
P245000	Evaporative Emission Control System Switching Valve Performance/Stuck Open	DMTL pump circuit short circuit, high resistance DMTL change over valve failed	Refer to the electrical guides and check the wiring between the ECM and DMTL valve. Repair/renew as necessary. Refer to the relevant workshop manual section.
P245100	Evaporative Emission Control System Switching Valve Stuck Closed	DMTL pump circuit short circuit, high resistance DMTL change over valve failed	Refer to the electrical guides and check the wiring between the ECM and DMTL valve. Repair/renew as necessary. Refer to the relevant workshop manual section.
P252516	Vacuum reservoir pressure sensor circuit	Brake booster vacuum pump relay short circuit to ground	Refer to the electrical guides and check the brake pump relay circuits/relay operation.
P252517	Vacuum reservoir pressure sensor circuit	Brake booster vacuum pump relay short circuit to power	Refer to the electrical guides and check the brake pump relay circuits/relay operation.
P261000	ECM Internal engine off timer performance	ECM internal error	Refer to the warranty policy and procedures manual if an ECM is suspect.
P277200	Four Wheel Drive (4WD) Low Switch Circuit Range/Performance	Low gear ratio plausibility check (CAN TCCM message v actual)	Check for four wheel drive system DTCs. Carry out a complete vehicle read.
U007300	Control Module Communication Bus "A" Off	CAN Link circuit malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U010100	Lost Communication With TCM	CAN Link ECM/TCM network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U010200	Lost Communication With Transfer Case Control Module	CAN Link ECM/transfer case control module network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U010400	Lost Communication With Cruise Control Module	CAN Link engine control module ECM/Speed control module CAN timeout	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U012100	Lost Communication With Anti-Lock Brake System (ABS) Control Module	CAN Link ECM/ABS network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U012600	Lost Communication With Steering Angle Sensor Module	CAN Link ECM/steering angle sensor network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U012800	Lost Communication With Park Brake Control Module	CAN Link ECM/electric park brake signal missing network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U013300	Lost Communication With Suspension Control Module "A"	CAN Link ECM/active roll control module network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U013800	Lost Communication with All Terrain Control Module	CAN Link ECM/terrain optimization switch network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U015100	Lost Communication With Restraints Control Module	Lost communications - CAN or hardwired	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U01511F	Lost Communication With Restraints Control Module	Lost communications - SRS fault	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U015157	Lost Communication With Restraints Control Module	Lost communications - CAN fault	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U015500	Lost Communication With Instrument Panel Cluster (IPC) Control Module	CAN Link ECM/IPC network malfunction	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U016700	Lost Communication With Vehicle Immobilizer Control Module	Security challenge response timeout	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U023500	Lost Communication With Cruise Control Front Distance Range Sensor	Lost communication Fault status transmitted	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U040264	Invalid Data Received from TCM	Invalid data received from transmission control module - actual gear position status	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U040267	Invalid Data Received from TCM	Invalid data received from transmission control module - gear shifter position status	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U040281	Invalid Data Received from TCM	Invalid data received from transmission control module - output shaft speed signal	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U042381	Invalid Data Received From Instrument Panel Control Module	External ambient temperature	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U042386	Invalid Data Received From Instrument Panel Control Module	Battery voltage level	Check for other CAN DTCs or apparently unrelated customer complaints. Carry out a complete vehicle DTC read. Check the CAN and module power and ground circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation.
U042600	Invalid Data Received From Vehicle Immobilizer Control Module	Security code mismatch	Check the configuration of the modules using the approved diagnostic system.
U206400	Warning Indicator Requested by Another Control Module	Crash event has occurred	Check for SRS DTCs. Refer to the relevant workshop manual section DTC index.

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Overview

Inspection and Verification

Symptom Chart

DTC index