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 1 Sensor 2) Or DTC P0156: Heated Oxygen Sensor Circuit (Bank 2 Sensor 2)
- DTC P0141: Heated Oxygen Sensor Heater Circuit (Bank 1 Sensor 2) Or DTC P0161: Heated Oxygen Sensor Heater Circuit (Bank 2 Sensor 2)
- DTC P0171: System Too Lean (Bank 1), DTC P0172: System Too Rich (Bank 1), DTC P0174: System Too Lean (Bank 2) Or DTC P0175: System Too Rich (Bank 2)
- DTC P0300, DTC P0301, DTC P0302, DTC P0303 &/Or DTC P0304
- DTC P0325: Knock Sensor Circuit
- DTC P0335: Crankshaft Position Sensor "A" Circuit Malfunction Or DTC P1335: Crankshaft Position Sensor "A" Circuit Malfunction (During Engine Running)
- DTC P0340: Camshaft Position Sensor Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) &/Or P0430: Catalyst System Efficiency Below Threshold (Bank 2)
- DTC P0440: Evaporative Emission Control System Malfunction & P0442: EVAP Emission Control System Leak Detected (Small Leak)
- DTC P0441: EVAP Emission Control System Incorrect Purge Flow Or P0446: EVAP Emission Control System Vent Control Circuit
- DTC P0450: EVAP Pressure Sensor Circuit Malfunction & P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Circuit
- DTC P0505: Idle Control System Malfunction
- DTC P1130: A/F Sensor Circuit (Bank 1 Sensor 1) Or DTC P1150: A/F Sensor Circuit (Bank 2 Sensor 1)
- DTC P1133: Air/Fuel Sensor Circuit Response Malfunction (Bank 1 Sensor 1) & DTC P1153: Air/Fuel Sensor Circuit Response Malfunction (Bank 2 Sensor 1)
- DTC P1135: Air/Fuel Sensor Heater Circuit (Bank 1 Sensor 1) & P1155: Air/Fuel Sensor Heater Circuit (Bank 2 Sensor 1)
- DTC P1300, DTC P1305, DTC P1310 & DTC P1315
- DTC P1346: Variable Valve Timing Sensor/Camshaft Position Sensor Circuit Range/Performance Problem
- DTC P1349: Variable Valve Timing System Malfunction
- DTC P1520: Stoplight Switch Signal Circuit Malfunction
- DTC P1600: Engine Control Module Batt Circuit
- DTC P1656: Oil Control Valve Circuit Malfunction (Bank 1)
- DTC P1780: Park/Neutral Position Switch Circuit