:  Dec 17, 2007



Overview

For additional information, refer to the relevant section of the workshop manual.

Inspection and Verification

. Verify the customer concern.

. Visually inspect for obvious signs of mechanical damage.

Mechanical
  • Leaks
  • Metal fatigue
  • Pipes
  • Catalytic converter
  • Muffler(s)
  • Joints
  • Mountings
  • Clearance around components

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

Symptom Chart

Symptom Possible causes Action
Noisy or leaking exhaust
  • Exhaust system/components
Install new components as necessary. Refer to the relevant section of the workshop manual.
Lack of power
  • Air intake system fault
  • Restricted exhaust system
  • Low fuel pressure
  • Exhaust gas recirculation (EGR) valve(s) fault
  • Turbocharger fault
Check the air intake system. Check for a blocked catalytic converter or muffler, install new components as necessary. Check the fuel pressure. For EGR and turbocharger tests, refer to the relevant section of the workshop manual.

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).

:
  For a full list of ECM DTCs, refer to section 303-14 - Electronic Engine Controls section of the workshop manual.

DTC Description Possible causes Action
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
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
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 high
  • Heated 0² sensor failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
P013100 O2 Circuit Low Voltage (Bank 1, Sensor 1)
  • Heated 0² sensor 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.
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
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 No Activity Detected (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
Refer to the guided diagnostic routine for this code on the approved diagnostic system.
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.
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.
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.