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Engine Control System Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Programming
- Scan Tool Problems
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0100: Mass Airflow Meter Circuit
- DTC P0101: Mass Airflow Meter Circuit Range/Performance
- DTC P0110: Intake Air Temperature Sensor Circuit
- DTC P0115: Engine Coolant Temperature Sensor Circuit
- DTC P0116: Engine Coolant Temperature Sensor Circuit Range/Performance
- DTC P0120: Throttle Position Sensor Circuit
- DTC P0121: Throttle Position Sensor Circuit Range/Performance
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0128: Thermostat Malfunction
- DTC P0136: Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 2)
- DTC P0141: Heated Oxygen Sensor Heater Circuit (Bank No. 1, Sensor No. 2)
- DTC P0156: Heated Oxygen Sensor Circuit (Bank No. 2, Sensor No. 2)
- DTC P0161: Heated Oxygen Sensor Heater Circuit (Bank No. 2, Sensor No. 2)
- DTC P0171: System Too Lean (Bank No. 1), Or P0172: System Too Rich (Bank No. 1)
- DTC P0174: System Too Lean (Bank No. 2), Or P0175: System Too Rich (Bank No. 2)
- DTC P0300: Random Misfire Detected
- DTCS P0301-P0304: Cylinders No. 1-4 Misfire Detected
- DTC P0325: Knock Sensor Circuit
- DTC P0335 Or P1335: Crankshaft Position Sensor Circuit
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold (Bank No. 1)
- DTC P0430: Catalyst System Efficiency Below Threshold (Bank No. 2)
- DTC P0440: Evaporative Emission Control System
- DTC P0441: Incorrect EVAP Purge Flow, Or DTC P0446: EVAP Vent Control Malfunction
- DTC P0450: EVAP Pressure Sensor Circuit, Or DTC P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Circuit
- DTC P0505: Idle Control System Malfunction
- DTC P1133: Air/Fuel Sensor Circuit Response Malfunction (Bank No. 1, Sensor No. 1)
- DTC P1135: Air/Fuel Sensor Heater Circuit (Bank No. 1, Sensor No. 1)
- DTC P1153: Air/Fuel Sensor Circuit Response Malfunction (Bank No. 2, Sensor No. 1)
- DTC P1155: Air/Fuel Sensor Heater Circuit (Bank No. 2, Sensor No. 1)
- DTC P1300: IGNITOR No. 1 Circuit
- DTC P1305: IGNITOR No. 2 Circuit
- DTC P1310: IGNITOR No. 3 Circuit
- DTC P1315: IGNITOR No. 4 Circuit
- DTC P1335: Crankshaft Position Sensor Circuit
- DTC P1346: Variable Valve Timing Sensor Circuit Range/Performance
- DTC P1349: Variable Valve Timing System Malfunction
- DTC P1520: Stoplight Switch Signal Circuit
- DTC P1600: Engine Control Module Batt Circuit
- DTC P1656: Oil Control Valve Circuit Malfunction
- DTC P1780: Park/Neutral Position Switch Circuit