Engine Controls - Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Diagnostic Trouble Code Definitions
- Electronic Control Module Locations
- Verifying Repairs
- Summary
- Intermittent Diagnostic Trouble Codes
- Terminal Identification
- Diagnostic Circuit Check
- Diagnostic Tests
- Notes
- DTC P0101: Volume Airflow (VAF) Circuit Range/Performance Problem
- DTC P0102: Volume Airflow (VAF) Circuit Low Input
- DTC P0103: Volume Airflow (VAF) Circuit High Input
- DTC P0107: BARO Circuit Low Input
- DTC P0108: BARO Circuit High Input
- DTC P0111: Intake Air Temperature (IAT) Circuit Malfunction
- DTC P0115: Engine Coolant Temperature (ECT) Circuit High Input
- DTC P0116: Engine Coolant Temperature (ECT) Circuit Range/Performance Problem
- DTC P0117: Engine Coolant Temperature (ECT) Circuit Low Input
- DTC P0121: Throttle Position (TP) Sensor Circuit Range/Performance Problem
- DTC P0122: Throttle Position (TP) Sensor Circuit Low Input
- DTC P0123: Throttle Position (TP) Sensor Circuit High Input
- DTC P0128: Coolant Thermostat Malfunction
- DTC P0130: Front Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Bank 1 Sensor 1)
- DTC P0133: Front Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 1 Sensor 1)
- DTC P0134: Front Heated Oxygen Sensor (Ho2S) Circuit No Activity Detected (Bank 1 Sensor 1)
- DTC P0135: Front Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 1 Sensor 1)
- DTC P0136: Rear Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Bank 1 Sensor 2)
- DTC P0139: Rear Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 1 Sensor 2)
- DTC P0141: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 1 Sensor 2)
- DTC P0150: Front Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Bank 2 Sensor 1)
- DTC P0153: Front Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 2 Sensor 1)
- DTC P0154: Front Heated Oxygen Sensor (Ho2S) Circuit No Activity Detected (Bank 2 Sensor 1)
- DTC P0155: Front Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 2 Sensor 1)
- DTC P0156: Rear Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Bank 2 Sensor 2)
- DTC P0159: Rear Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 2 Sensor 2)
- DTC P0161: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 2 Sensor 2)
- DTC P0171 Or P0174: System Too Lean
- DTC P0172 Or P0175: System Too Rich
- DTC P0201-P0206: Fuel Injectors No. 1-6 Circuit Malfunction
- DTC P0300: Random Misfire Detected
- DTC P0301-P0306: Cylinders No. 1-6 Misfire Detected
- DTC P0325: Knock Sensor (KS) Circuit Malfunction
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Malfunction
- DTC P0340: Camshaft Position (CMP) Sensor Circuit Malfunction
- DTC P0401: EGR Insufficient Flow Detected
- DTC P0403: EGR Solenoid Malfunction
- DTC P0421 Or P0431: Warm-Up Catalytic Converter Efficiency Below Threshold
- DTC P0442: EVAP System Small Leak Detected
- DTC P0443: EVAP System Purge Solenoid Circuit Malfunction
- DTC P0446: EVAP System Vent Control Malfunction
- DTC P0450 & P0451: EVAP System Pressure Sensor Malfunction
- DTC P0455: EVAP System Large Leak Detected
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction (M/T)
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction (A/T)
- DTC P0506: Idle Control System Rpm Lower Than Expected
- DTC P0507: Idle Control System Rpm Higher Than Expected
- DTC P0551: Power Steering Pressure Sensor Circuit Range/Performance
- DTC P1400: Manifold Differential Pressure (MDP) Sensor Circuit Malfunction
- DTC P1500: Generator Fr Terminal Circuit Malfunction
- DTC P1603: Battery Backup Line Malfunction
- DTC P01610: Immobilizer Malfunction