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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Summary DTC Definition System Tests Diagnostic Tests DTC P0101: Mass Air Flow (MAF) Sensor Circuit Performance Problem DTC P0102: Mass Air Flow (MAF) Sensor Circuit, Low Input DTC P0103: Mass Air Flow (MAF) Sensor Circuit, High Input DTC P0111: Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem DTC P0112: Intake Air Temperature (IAT) Sensor Circuit, Low Input DTC P0113: Intake Air Temperature (IAT) Sensor Circuit, High Input DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit, Low Input DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit, High Input DTC P0121: Throttle Position (TP) Sensor Circuit Performance Problem DTC P0122: Throttle Position (TP) Sensor Circuit, Low Input DTC P0123: Throttle Position (TP) Sensor Circuit, High Input DTC P0125: Insufficient Coolant Temperature For Closed Loop Operation DTC P0131: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 1 (B1 S1) Circuit, Low Input DTC P0132: Heated Oxygen Sensor Bank No. 1 (Left Bank) Sensor No. 1, (B1 S1) Circuit, High Input DTC P0133: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 1 (B1 S1) Circuit, High Input DTC P0134: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 1 (B1 S1) Circuit, No Activity Detected DTC P0135: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 1 (B1 S1), Heater Circuit Malfunction DTC P0136: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 2 (B1 S2), Circuit Malfunction DTC P0141: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 2 (B1 S2), Circuit Malfunction DTC P0151: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 1 (B2 S1), Low Input DTC P0152: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 1 (B2 S1), High Input DTC P0153: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 1 (B2 S1), Slow Response DTC P0154: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 1 (B2 S1) Circuit, No Activity Detected DTC P0155: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 1 (B2 S1), Heater Circuit Malfunction DTC P0156: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 2 (B2 S2), Circuit Malfunction DTC P0161: Heated Oxygen Sensor Bank No. 2 (Right Bank), Sensor No. 2 (B2 S2), Heater Circuit Malfunction DTC P0171: Total Left Bank Fuel Trim Is Greater Than Allowed Specification, Or DTC P0172: Total Left Bank Fuel Trim Is Less Than Allowed Specification DTC P0174: Total Right Bank Fuel Trim Is Greater Than Allowed Specification, Or DTC P0175: Total Right Bank Fuel Trim Is Less Than Allowed Specification DTC P0300: Random Misfire, Or DTC P0301-P0306: Cylinders No. 1-6 Misfire DTC P0335: Crankshaft Position (CKP) Sensor Circuit Malfunction DTC P0340: Camshaft Position (CMP) Sensor Circuit Malfunction DTC P0400: EGR Flow Malfunction DTC P0420: Left Bank Catalyst System Low Efficiency, Or DTC P0430: Right Bank Catalyst System Low Efficiency DTC P0440: EVAP Circuit, Malfunction, Or DTC P0455: EVAP Circuit, Large Leak Detected DTC P0450: EVAP Circuit, Pressure Sensor Malfunction DTC P0451: EVAP Circuit, Pressure Sensor Range/Performance Problem DTC P0461: Fuel Level Sensor Circuit Performance Problem DTC P0463: Fuel Level Sensor Circuit, High Input DTC P0500: Vehicle Speed Sensor (VSS) Malfunction DTC P0505: Idle Air Control (IAC) System Malfunction DTC P0601: Internal Control Module Memory Check Sum Error DTC P1408: Manifold Absolute Pressure (Map) Sensor Circuit Malfunction DTC P1450: Barometric Pressure Sensor Circuit Malfunction, Or DTC P1451: Barometric Pressure Sensor Performance Problem DTC P1500: Starter Signal Circuit Malfunction DTC P1510: Pcm Back-Up Power Supply Malfunction