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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Powertrain Control Module Location Verifying Repairs Drive Cycles Summary Intermittent Diagnostic Trouble Codes Diagnostic Trouble Code Definitions 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 P0106: Barometric Pressure Sensor Circuit Range/Performance Problem DTC P0107: Barometric Pressure Sensor Circuit Low Input DTC P0108: Barometric Pressure Sensor 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 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 P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control DTC P0128: Coolant Thermostat Malfunction DTC P0132: Right Front Heated Oxygen Sensor (Ho2S) Circuit High Voltage (Bank 1, Sensor 1) DTC P0133: Right Front Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 1, Sensor 1) DTC P0134: Right Front Heated Oxygen Sensor (Ho2S) Circuit No Activity Detected (Bank 1, Sensor 1) DTC P0135: Right Front Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 1, Sensor 1) DTC P0137: Right Rear Heated Oxygen Sensor (Ho2S) Circuit Low Voltage (Bank 1, Sensor 2) DTC P0138: Right Rear Heated Oxygen Sensor (Ho2S) Circuit High Voltage (Bank 1, Sensor 2) DTC P0139: Right Rear Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 1, Sensor 2) DTC P0141: Right Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 1, Sensor 2) DTC P0152: Left Front Heated Oxygen Sensor (Ho2S) Circuit High Voltage (Bank 2, Sensor 1) DTC P0153: Left Front Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 2, Sensor 1) DTC P0154: Left Front Heated Oxygen Sensor (Ho2S) Circuit No Activity Detected (Bank 2, Sensor 1) DTC P0155: Left Front Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 2, Sensor 1) DTC P0157: Left Rear Heated Oxygen Sensor (Ho2S) Circuit Low Voltage (Bank 2, Sensor 2) DTC P0158: Left Rear Heated Oxygen Sensor (Ho2S) Circuit High Voltage (Bank 2, Sensor 2) DTC P0159: Left Rear Heated Oxygen Sensor (Ho2S) Circuit Slow Response (Bank 2, Sensor 2) DTC P0161: Left Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Bank 2, Sensor 2) DTC P0171: Right Bank System Too Lean (Bank 1) DTC P0172: Right Bank System Too Rich (Bank 1) DTC P0174: Left Bank System Too Lean (Bank 2) DTC P0175: Left Bank System Too Rich (Bank 2) DTC P0181: Fuel Temperature Sensor Circuit Range/Performance Problem DTC P0182: Fuel Temperature Sensor Circuit Low Input DTC P0183: Fuel Temperature Sensor Circuit High Input DTC P0201, DTC P0202, DTC P0203, DTC P0204, DTC P0205 & DTC P0206 DTC P0300: Random Misfire Detected DTC P0301, DTC P0302, DTC P0303, DTC P0304, DTC P0305 & DTC P0306 DTC P0325: Knock Sensor 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 Circuit Malfunction DTC P0421 Or DTC P0431 DTC P0441: EVAP Emission Control System Incorrect Purge Flow DTC P0442 & DTC P0456 DTC P0443: EVAP Emission Control System Purge Control Valve Circuit Problem DTC P0446: EVAP Emission Control System Vent Control Circuit Problem DTC P0451, DTC P0452 &/Or DTC P0453 DTC P0455: EVAP Emission Control System Large Leak Detected DTC P0461: Fuel Level Sensor Circuit Range/Performance Problem DTC P0506 Or DTC P0507 DTC P0551: Power Steering Pressure Sensor Circuit Range/Performance Problem DTC P1400: Manifold Differential Pressure (MDP) Sensor Circuit Malfunction DTC P1603: Battery Backup Line Malfunction DTC P1610: Immobilizer Malfunction