Engine Controls - Self-Diagnostics
- Diagnostic Trouble Code Definitions
- Circuit Tests
- Diagnostic Tests
- DTC P0100: Volume Airflow (VAF) Sensor Circuit Malfunction
- DTC P0105: Barometric (BARO) Pressure Sensor Circuit Malfunction
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit Malfunction
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Circuit Malfunction
- DTC P0120: Throttle Position (TP) Sensor Circuit Malfunction
- DTC P0125: Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat Malfunction
- DTC P0130: Front Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Federal)
- DTC P0130: Bank 1 Sensor 1 Heated Oxygen Sensor (Ho2S) Circuit Malfunction (CALIFORNIA)
- DTC P0135: Front Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Federal)
- DTC P0135: Bank 1 Sensor 1 Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (CALIFORNIA)
- DTC P0136: Rear Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Federal)
- DTC P0136: Bank 1 Sensor 2 Heated Oxygen Sensor (Ho2S) Circuit Malfunction (CALIFORNIA)
- DTC P0141: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Federal)
- DTC P0141: Bank 1 Sensor 2 Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (CALIFORNIA)
- DTC P0150: Bank 2 Sensor 1 Heated Oxygen Sensor (Ho2S) Circuit Malfunction (CALIFORNIA)
- DTC P0155: Bank 2 Sensor 1 Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (CALIFORNIA)
- DTC P0156: Bank 2 Sensor 2 Heated Oxygen Sensor (Ho2S) Circuit Malfunction (CALIFORNIA)
- DTC P0161: Bank 2 Sensor 2 Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (CALIFORNIA)
- DTC P0170 & P0173: Fuel Trim Malfunction
- DTC P0180: Fuel Temperature Sensor Circuit Malfunction
- DTC P0201-P0206: Injectors No. 1-6 Circuit Malfunction
- DTC P0300: Random Misfire Detected
- DTC P0301-P0306: Cylinders No. 1-6 Misfire Detected
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Malfunction
- DTC P0340: Camshaft Position (CMP) Sensor Circuit Malfunction
- DTC P0400: Exhaust Gas RECIRCULATION (EGR) Flow Malfunction
- DTC P0403: Exhaust Gas RECIRCULATION (EGR) Solenoid Malfunction
- DTC P0420: Catalyst Efficiency Below Threshold (Federal)
- DTC P0421 & P0431: Catalyst Efficiency Below Threshold (CALIFORNIA)
- DTC P0442: Evaporative (EVAP) Emission Control System Leak Detected
- DTC P0443: Evaporative (EVAP) Emission Control System Purge Control Valve Circuit Malfunction
- DTC P0446: Evaporative (EVAP) Emission Control System Ventilation Control Malfunction
- DTC P0450: Evaporative (EVAP) Emission Control System Pressure Sensor Malfunction
- DTC P0455: Evaporative (EVAP) Emission Control System Large Leak Detected
- DTC P0460: Fuel Level Sensor Circuit Malfunction
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit Malfunction
- DTC P0505: Idle Control System Malfunction (3.5L)
- DTC P0510: Closed Throttle Position (TP) Switch Malfunction (3.0L)
- DTC P0551: Power Steering Pressure (PSP) Sensor Circuit Performance
- DTC P0705: Transmission Range Sensor Circuit Malfunction
- DTC P0710: Transmission Fluid Temperature Sensor Circuit Malfunctions
- DTC P0715: Input/Turbine Speed Sensor Circuit Malfunction
- DTC P0720: Output Speed Sensor Circuit Malfunction
- DTC P0725: Engine Speed Input Circuit Malfunction
- DTC P0740: Torque Converter Clutch System Malfunction
- DTC P0750: Shift Solenoid "A" Malfunction
- DTC P0755: Shift Solenoid "B" Malfunction
- DTC P0760: Shift Solenoid "C" Malfunction
- DTC P0765: Shift Solenoid "D" Malfunction
- DTC P1400: Manifold Differential Pressure (MDP) Sensor Circuit Malfunction
- DTC P1600: Serial Communication Link Malfunction
- DTC P1720: Vehicle Speed Sensor Signal Line
- DTC P1751: A/T Control Relay Malfunction
- DTC P1795: Throttle Position Input Circuit Malfunction