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Engine DTCS

NOTE: Retrieval of some diagnostic codes may require the use of special OEM tester or flash method using instrument cluster indicator. For procedures/testing of codes not shown below, refer to appropriate system article.
ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION (2.5L)

DTC Description
P0031 Front Oxygen Sensor (A/F) Heater Circuit Low Input
P0032 Front Oxygen Sensor (A/F) Heater Circuit High Input
P0037 Rear Heated Oxygen Sensor (HO2S) Heater Circuit Malfunction
P0037 Rear Heated Oxygen Sensor (HO2S) Heater Circuit Low Input
P0038 Rear Heated Oxygen Sensor (HO2S) Heater Circuit High Input
P0065 Air Assist Injector Solenoid Valve Malfunction
P0066 Air Assist Injector Solenoid Valve Circuit Low Input
P0067 Air Assist Injector Solenoid Valve Circuit High Input
P0106 Pressure Sensor Circuit Range/Performance Problem (Low Input)
P0107 Pressure Sensor Circuit Low Input
P0108 Pressure Sensor Circuit High Input
P0111 Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
P0112 Intake Air Temperature (IAT) Sensor Circuit Low Input
P0113 Intake Air Temperature (IAT) Sensor Circuit High Input
P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Input
P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Input
P0121 Throttle Position (TP) Sensor Circuit Range/Performance Problem (High Input)
P0122 Throttle Position (TP) Sensor Circuit Low Input
P0123 Throttle Position (TP) Sensor Circuit High Input
P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control
P0128 Thermostat Malfunction
P0130 Front Oxygen Sensor (A/F) Circuit Range/Performance Problem (Lean)
P0131 Front Oxygen Sensor (A/F) Circuit Malfunction (Open Circuit)
P0132 Front Oxygen Sensor (A/F) Circuit Malfunction (Short Circuit)
P0133 Front Oxygen Sensor (A/F) Circuit Slow Response
P0136 Rear Heated Oxygen Sensor (HO2S) Circuit Malfunction
P0137 Rear Heated Oxygen Sensor (HO2S) Circuit Low Input
P0138 Rear Heated Oxygen Sensor (HO2S) Circuit High Input
P0139 Rear Heated Oxygen Sensor (HO2S) Circuit Slow Response
P0171 Fuel Trim Malfunction (A/F Too Lean)
P0172 Fuel Trim Malfunction (A/F Too Rich)
P0181 Fuel Temperature Sensor "A" Circuit Range/Performance Problem
P0182 Fuel Temperature Sensor "A" Circuit Low Input
P0183 Fuel Temperature Sensor "A" Circuit High Input
P0183 Fuel Temperature Sensor "A" Circuit High Input
P0301 Cylinder No. 1 Misfire Detected
P0302 Cylinder No. 2 Misfire Detected
P0303 Cylinder No. 3 Misfire Detected
P0304 Cylinder No. 4 Misfire Detected
P0327 Knock Sensor (KS) Circuit Low Input
P0328 Knock Sensor (KS) Circuit High Input
P0335 Crankshaft Position (CKP) Sensor Circuit Malfunction
P0336 Crankshaft Position (CKP) Sensor Circuit Range/Performance Problem
P0340 Camshaft Position (CMP) Sensor Circuit Malfunction
P0341 Camshaft Position (CMP) Sensor Circuit Range/Performance Problem
P0420 Catalyst System Efficiency Below Threshold (Legacy & Outback
P0442 EVAP System Malfunction
P0444 EVAP System Purge Control Valve Circuit Low Input
P0445 EVAP System Purge Control Valve Circuit High Input
P0447 EVAP System Vent Control Circuit Low Input
P0448 EVAP System Vent Control Circuit High Input
P0451 EVAP System Pressure Sensor Range/Performance Problem
P0452 EVAP System Pressure Sensor Low Input (Legacy & Outback)
P0453 EVAP System Pressure Sensor High Input (Legacy & Outback)
P0456 EVAP System Malfunction
P0457 EVAP System Malfunction
P0458 EVAP System Purge Control Valve Circuit Low Input
P0459 EVAP System Purge Control Solenoid Valve Circuit High Input
P0461 Fuel Level Sensor Circuit Range/Performance Problem
P0462 Fuel Level Sensor Circuit Low Input
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent Input
P0464 Fuel Level Sensor Circuit Intermittent Input
P0480 Cooling Fan Relay No. 1 Circuit Low Input
P0483 Cooling Fan Function Problem
P0500 Vehicle Speed Sensor (VSS) Malfunction (Legacy & Outback)
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected
P0512 Starter Switch Circuit High Input
P0604 Internal Control Module Memory Check Sum Error
P0691 Cooling Fan Relay No. 1 Circuit Low Input
P0692 Cooling Fan Relay No. 1 Circuit High Input
P0703 Brake Switch Input Malfunction (A/T)
P0731 Gear 1 Incorrect Ratio (A/T)
P0732 Gear 2 Incorrect Ratio (A/T)
P0733 Gear 3 Incorrect Ratio (A/T)
P0734 Gear 4 Incorrect Ratio (A/T)
P0741 Torque Converter Clutch System Malfunction (A/T)
P0851 Inhibitor Switch Circuit Low Input (A/T) (Legacy & Outback)
P0851 Neutral Position Switch Circuit Low Input (M/T) (Legacy & Outback)
P0852 Inhibitor Switch Circuit High Input (A/T) (Legacy & Outback)
P0852 Neutral Position Switch Circuit High Input (M/T) (Legacy & Outback)
P0864 A/T Diagnosis Input Signal Circuit Malfunction
P0865 A/T Diagnosis Input Signal Circuit Low Input
P0866 A/T Diagnosis Input Signal Circuit High Input
P1110 Atmospheric Pressure Sensor Circuit Low Input (Legacy & Outback)
P1111 Atmospheric Pressure Sensor Circuit High Input (Legacy & Outback)
P1112 Atmospheric Pressure Sensor Circuit Range/Performance Problem (Legacy & Outback)
P1137 Front Oxygen Sensor (A/F) Circuit Range/Performance Problem
P1142 Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)
P1146 Pressure Sensor Circuit Range/Performance Problem (High Input)
P1400 Fuel Tank Pressure Control Solenoid Valve Circuit Low Input
P1420 Fuel Tank Pressure Control Solenoid Valve Circuit High Input
P1442 Fuel Level Sensor Circuit Range/Performance Problem 2
P1443 EVAP System Vent Control Function Problem
P1446 EVAP System Atmospheric Pressure Solenoid Valve Circuit Low Input
P1447 EVAP System Atmospheric Pressure Solenoid Valve Circuit High Input
P1448 EVAP System Atmospheric Pressure Solenoid Valve Circuit Range/Performance Problem
P1480 Cooling Fan Relay No. 1 Circuit High Input
P1507 Idle Control System Malfunction (Fail-Safe)
P1510 Idle Air Control (IAC) Solenoid Valve Signal No. 1 Circuit Low Input
P1511 Idle Air Control (IAC) Solenoid Valve Signal No. 1 Circuit High Input
P1512 Idle Air Control (IAC) Solenoid Valve Signal No. 2 Circuit Low Input
P1513 Idle Air Control (IAC) Solenoid Valve Signal No. 2 Circuit High Input
P1514 Idle Air Control (IAC) Solenoid Valve Signal No. 3 Circuit Low Input
P1515 Idle Air Control (IAC) Solenoid Valve Signal No. 3 Circuit High Input
P1516 Idle Air Control (IAC) Solenoid Valve Signal No. 4 Circuit Low Input
P1517 Idle Air Control (IAC) Solenoid Valve Signal No. 4 Circuit High Input
P1518 Starter Switch Circuit Low Input
P1540 Vehicle Speed Sensor (VSS) Malfunction 2
P1560 Back-Up Voltage Circuit Malfunction
P1590 Inhibitor Switch Circuit High Input (A/T)
P1591 Inhibitor Switch Circuit Low Input (A/T)
P1592 Neutral Position Switch Circuit Malfunction (M/T)
P1594 A/T Diagnosis Input Signal Circuit Malfunction
P1595 A/T Diagnosis Input Signal Circuit Low Input
P1596 A/T Diagnosis Input Signal Circuit High Input
P1698 Engine Torque Control Cut Signal Circuit Low Input (A/T)
P1699 Engine Torque Control Cut Signal Circuit High Input (A/T)
P1701 Cruise Control Set Signal Circuit Malfunction (A/T)
P1711 Engine Torque Control Signal No. 1 Circuit Malfunction (A/T)
P1712 Engine Torque Control Signal No. 2 Circuit Malfunction (A/T)