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
- DTC P0141: Heated Oxygen Sensor Heater Circuit
- DTC P0171: System Too Lean, Or DTC P0172: System Too Rich
- DTC P0300: Random/Multiple Cylinder Misfire Detected
- DTC P0301: Cylinder No. 1 Misfire Detected, DTC P0302: Cylinder No. 2 Misfire Detected, DTC P0303: Cylinder No. 3 Misfire Detected, DTC P0304: Cylinder No. 4 Misfire Detected, DTC P0305: Cylinder No. 5 Misfire Detected, DTC P0306: Cylinder No. 6 Misfire Detected,
- DTC P0325: Knock Sensor No. 1 Circuit
- DTC P0330: Knock Sensor No. 2 Circuit
- DTC P0335 Or P1335: Crankshaft Position Sensor Circuit
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0440: Evaporative Emission Control System, Or DTC P0442: EVAP Leak Detected
- DTC P0441: Incorrect EVAP Purge Flow, Or DTC P0446: EVAP Vent Control Malfunction
- DTC P0442: EVAP Leak Detected
- 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 P1120: Accelerator Pedal Position Sensor Circuit
- DTC P1121: Accelerator Pedal Position Sensor Range/Performance
- DTC P1125: Throttle Control Motor Circuit
- DTC P1126: Magnetic Clutch Circuit
- DTC P1127: Electronic Throttle Control System Actuator Power Source Circuit
- DTC P1128: Throttle Control Motor Lock Malfunction
- DTC P1129: Electronic Throttle Control System Malfunction
- DTC P1130: Air/Fuel Sensor Circuit Range/Performance
- DTC P1133: Air/Fuel Sensor Circuit Response Malfunction
- DTC P1135: Air/Fuel Sensor Heater Circuit Malfunction
- DTC P1300: IGNITOR Circuit
- DTC P1335: Crankshaft Position Sensor Circuit
- DTC P1520: Stoplight Switch Signal Circuit
- DTC P1600: Engine Control Module Batt Circuit
- DTC P1633: ECM Malfunction (Electronic Throttle Control System Circuit)
- DTC P1780: Park/Neutral Position Switch Circuit