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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Testing Procedure Powertrain Control Module Location Verifying Repairs Programming Drive Cycles Summary Diagnostic Trouble Code Definitions Component Locations Connector Identification Diagnostic Tests Notes DTC P0101: Volume Airflow Circuit Range/Performance Problem DTC P0102: Volume Airflow Circuit Low Input DTC P0106: Barometric Pressure Circuit Range/Performance Problem DTC P0107: Barometric Pressure Circuit Low Input DTC P0108: Barometric Pressure Circuit High Input DTC P0111: Intake Air Temperature Circuit Range/Performance Problem DTC P0112: Intake Air Temperature Circuit Low Input DTC P0113: Intake Air Temperature Circuit High Input DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem DTC P0117: Engine Coolant Temperature Circuit Low Input DTC P0118: Engine Coolant Temperature Circuit High Input DTC P0122: Throttle Position Sensor (Main) Circuit Low Input DTC P0123: Throttle Position Sensor (Main) Circuit High Input DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) DTC P0130: Heated Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 1) DTC P0131: Heated Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1) DTC P0132: Heated Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 1) DTC P0133: Heated Oxygen Sensor Circuit Slow Response (Bank 1, Sensor 1) DTC P0134: Heated Oxygen Sensor Circuit No Activity Detected (Bank 1, Sensor 1) DTC P0135: Heated Oxygen Sensor Heater Circuit (Bank 1, Sensor 1) DTC P0136: Heated Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2) DTC P0137: Heated Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2) DTC P0138: Heated Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2) DTC P0139: Heated Oxygen Sensor Circuit Slow Response (Bank 1, Sensor 2) DTC P0141: Heated Oxygen Sensor Heater Circuit (Bank 1, Sensor 2) DTC P0150: Heated Oxygen Sensor Circuit High Voltage (Bank 2, Sensor 1) DTC P0151: Heated Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 1) DTC P0152: Heated Oxygen Sensor Circuit High Voltage (Bank 2, Sensor 1) DTC P0153: Heated Oxygen Sensor Circuit Slow Response (Bank 2, Sensor 1) DTC P0154: Heated Oxygen Sensor Circuit No Activity Detected (Bank 2, Sensor 1) DTC P0155: Heated Oxygen Sensor Heater Circuit (Bank 2, Sensor 1) DTC P0156: Heated Oxygen Sensor Circuit (Bank 2, Sensor 2) DTC P0157: Heated Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2) DTC P0158: Heated Oxygen Sensor Circuit High Voltage (Bank 2, Sensor 2) DTC P0159: Heated Oxygen Sensor Circuit Slow Response (Bank 2, Sensor 2) 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) DTC P0175: System Too Rich (Bank 2) DTC P0181: Fuel Tank Temperature Sensor Circuit Range/Performance DTC P0182: Fuel Tank Temperature Sensor Circuit Low Input DTC P0183: Fuel Tank Temperature Sensor Circuit High Input DTC P0201-P0206: Injector Circuit Malfunction - Cylinder 1-6 DTC P0222: Throttle Position Sensor (Sub) Circuit Low Input DTC P0223: Throttle Position Sensor (Sub) Circuit High Input DTC P0300: Random/Multiple Cylinder Misfire Detected DTC P0301-P0306: Cylinder 1-6 Misfire Detected DTC P0325: Knock Sensor 1 Circuit Malfunction DTC P0335: Crankshaft Position Sensor Circuit DTC P0340: Camshaft Position Sensor Circuit DTC P0401: Exhaust Gas RECIRCULATION Flow Insufficient Detected DTC P0403: Exhaust Gas RECIRCULATION Control Circuit DTC P0421: Warm Up Catalyst Efficiency Below Threshold (Bank 1) DTC P0431: Warm Up Catalyst Efficiency Below Threshold (Bank 2) DTC P0441: Evaporative Emission System Incorrect Purge Flow DTC P0442: Evaporative Emission System Leak Detected (Small Leak) DTC P0443: Evaporative Emission System Purge Control Valve Circuit DTC P0446: Evaporative Emission System Vent Control Circuit DTC P0451: Evaporative Emission System Pressure Sensor Range/Performance DTC P0452: Evaporative Emission System Pressure Sensor Low Input DTC P0453: Evaporative Emission System Pressure Sensor High Input DTC P0455: Evaporative Emission System Leak Detected (Gross Leak) DTC P0456: Evaporative Emission System Leak Detected (Very Small Leak) DTC P0461: Fuel Level Sensor Circuit Range/Performance DTC P0513: Immobilizer Malfunction DTC P0551: Power Steering Pressure Sensor Circuit Range/Performance DTC P0554: Power Steering Pressure Sensor Circuit Intermittent DTC P0606: Powertrain Control Module Main Processor Malfunction DTC P0638: Throttle Actuator Control Motor Circuit Range/Performance Problem DTC P0642: Throttle Position Sensor Power Supply DTC P0657: Throttle Actuator Control Motor Relay Circuit Malfunction DTC P0660: Intake Manifold Tuning Solenoid Circuit Malfunction DTC P1400: Manifold Differential Pressure Sensor Circuit Malfunction DTC P1601: Communication Malfunction (Between Pcm & Throttle Actuator Control Module) DTC P1603: Battery Backup Line Malfunction DTC P2100: Throttle Actuator Control Motor Circuit (Open) DTC P2101: Throttle Actuator Control Motor Magneto Malfunction DTC P2102: Throttle Actuator Control Motor Circuit (Shorted Low) DTC P2103: Throttle Actuator Control Motor Circuit (Shorted High) DTC P2108: Throttle Actuator Control Module Processor Malfunction DTC P2121: Accelerator Pedal Position Sensor (Main) Circuit Range/Performance Problem DTC P2122: Accelerator Pedal Position Sensor (Main) Circuit Low Input DTC P2123: Accelerator Pedal Position Sensor (Main) Circuit High Input DTC P2126: Accelerator Pedal Position Sensor (Sub) Circuit Range/Performance Problem DTC P2127: Accelerator Pedal Position Sensor (Sub) Circuit Low Input DTC P2128: Accelerator Pedal Position Sensor (Sub) Circuit High Input DTC P2135: Throttle Position Sensor (Main & Sub) Range/Performance Problem DTC P2138: Accelerator Pedal Position Sensor (Main & Sub) Circuit Range/Performance Problem Wiring Diagrams