Section 1 (Engine Controls - Self-Diagnostics - 2.5L)
WARNING: This page is about a different variant/trim than selected.
- Introduction
- Self-Diagnostic System
- Drive Cycles
- Programming
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0030: Front Heated Oxygen Sensor (Ho2S) Control Circuit Malfunction (BAJA, Legacy & Outback)
- DTC P0030: Front Heated Oxygen Sensor (Ho2S) Control Circuit Malfunction (Forester & IMPREZA)
- DTC P0031: Front Heated Oxygen Sensor (Ho2S) Heater Circuit Low Input
- DTC P0032: Front Ho2S Heater Circuit, High Input
- DTC P0037: Rear Ho2S Heater Circuit, Malfunction
- DTC P0038: Rear Ho2S Heater Circuit, High Output
- DTC P0065: Air Assist Injector Solenoid Valve Circuit, Malfunction
- DTC P0066: Air Assist Injector Solenoid Valve Circuit, Low Input
- DTC P0067: Air Assist Injector Solenoid Valve Circuit, High Input
- DTC P0068: Intake Manifold/Barometric Pressure Sensor Circuit, Range Performance Problem
- DTC P0107: Intake Manifold Pressure Sensor Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P0107: Intake Manifold/Barometric Pressure Sensor Circuit, Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0108: Intake Manifold Pressure Sensor Circuit, High Input (BAJA, Legacy & Outback)
- DTC P0108: Intake Air Temperature & Pressure Sensor Circuit, High Input (Forester, IMPREZA & Outback Sport)
- 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 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, Range/Performance Problem (BAJA, Legacy & Outback)
- DTC P0121: Throttle Position (TP) Sensor Circuit, Range/Performance Problem (Forester IMPREZA & Outback Sport)
- DTC P0122: Throttle Position (TP) Sensor Circuit, Low Input (Forester & IMPREZA)
- DTC P0123: Throttle Position (TP) Sensor Circuit, High Input
- DTC P0125: Engine Coolant Temperature Too Low For Closed Loop Fuel Control
- DTC P0128: Thermostat Malfunction
- DTC P0129: Barometric Pressure Too Low
- DTC P0130: Front Ho2S Circuit, Range/Performance Problem
- DTC P0131: Front Ho2S Circuit, Low Input
- DTC P0132: Front Ho2S Circuit, High Input
- DTC P0133: Front Ho2S Circuit, Slow Response
- DTC P0134: Front Ho2S Circuit, No Activity Detected
- DTC P0137: Rear Ho2S Circuit, Low Input
- DTC P0138 Rear Ho2S Circuit, High Input
- DTC P0139: Rear Ho2S Circuit, Slow Response
- DTC P0171: Fuel Trim Malfunction (Too Lean - BAJA, Legacy & Outback)
- DTC P0171: Fuel Trim Malfunction (Too Lean - Forester, IMPREZA & Outback Sport)
- DTC P0172: Fuel Trim Malfunction (Too Rich - BAJA, Legacy & Outback)
- DTC P0172: Fuel Trim Malfunction (Too Rich - Forester & IMPREZA)
- DTC P0181: Fuel Temperature Sensor "A" Circuit, Range/Performance Problem
- DTC P0182: Fuel Temperature Sensor "A" Circuit, Low Input
- DTC P0183: Fuel Temperature Sensor "A" Circuit, High Input
- DTC P0301, DTC P0302, DTC P0303 & DTC P0304
- DTC P0327: Knock Sensor (KS) Circuit, Low Input
- DTC P0328: Knock Sensor (KS) Circuit, High Input
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit, Malfunction
- DTC P0336: Crankshaft Position (CKP) Sensor Circuit, Range/Performance Problem
- DTC P0340: Camshaft Position (CMP) Sensor Circuit, Malfunction
- DTC P0341: Camshaft Position (CMP) Sensor Circuit, Range/Performance Problem
- DTC P0400: Exhaust Gas RECIRCULATION Flow Problem
- DTC P0420: Catalyst System Efficiency Below Threshold
- DTC P0442: EVAP System Purge Control Valve Circuit, Malfunction (Forester, IMPREZA , Legacy & Outback)
- DTC P0447: EVAP System Vent Control Circuit, Low Input
- DTC P0448: EVAP System Vent Control Circuit, High Input
- DTC P0451: EVAP System Pressure Sensor Range/Performance Problem
- DTC P0452: EVAP System Pressure Sensor Low Input
- DTC P0453: EVAP System Pressure Sensor High Input (BAJA, Legacy & Outback)
- DTC P0453: EVAP System Pressure Sensor High Input (Forester, IMPREZA & Outback Sport)
- DTC P0456: EVAP System Malfunction
- DTC P0457: EVAP System Leak Detected (Fuel Cap Loose/Off)
- DTC P0458: EVAP System Purge Control Valve Circuit, Low Input
- DTC P0459: EVAP System Purge Control Valve Circuit, High Input
- DTC P0461: Fuel Level Sensor Circuit, Range/Performance Problem
- DTC P0462: Fuel Level Sensor Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P0462: Fuel Level Sensor Circuit, Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0463: Fuel Level Sensor Circuit, High Input (BAJA, Legacy & Outback)
- DTC P0463: Fuel Level Sensor Circuit, High Input (Forester, IMPREZA & Outback Sport)
- DTC P0464: Fuel Level Sensor Intermittent Input
- DTC P0483: Cooling Fan Function Problem
- DTC P0502: Vehicle Speed Sensor Circuit, Low Input
- DTC P0503: Vehicle Speed Sensor Intermittent/Erratic/High (BAJA, Legacy & Outback)
- DTC P0503: Vehicle Speed Sensor Intermittent/Erratic/High (Forester, IMPREZA & Outback Sport)
- DTC P0506: Idle Control System, Rpm Lower Than Expected
- DTC P0507: Idle Control System, Rpm Higher Than Expected
- DTC P0512: Starter Request Circuit
- DTC P0519: Idle Air Control Circuit, System Performance
- DTC P0565: Cruise Control On Signal (BAJA, Legacy & Outback)
- DTC P0565: Cruise Control On Signal (Forester, IMPREZA & Outback Sport)
- DTC P0604: Internal Control Module Memory Check Sum Error
- DTC P0691: Cooling Fan 1 Control Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P0691: Cooling Fan 1 Control Circuit, Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0692: Cooling Fan Control 1 Circuit, High Input (BAJA, Legacy & Outback)
- DTC P0692: Cooling Fan 1 Control Circuit, High Input (Forester, IMPREZA & Outback Sport)
- DTC P0703: Brake Switch Input Malfunction
- DTC P0731: Gear 1, Incorrect Ratio (A/T)
- DTC P0732: Gear 2, Incorrect Ratio (A/T)
- DTC P0733: Gear 3, Incorrect Ratio (A/T)
- DTC P0734: Gear 4, Incorrect Ratio (A/T)
- DTC P0741: Torque Converter Clutch Circuit, Performance Or Stuck Off (A/T)
- DTC P0851: Neutral Switch Input Circuit, Low (A/T)
- DTC P0851: Neutral Switch Input Circuit, Low (M/T)
- DTC P0852: Neutral Switch Input Circuit, High (A/T)
- DTC P0852: Neutral Switch Input Circuit, High (M/T)
- DTC P0864: TCM Communication Circuit, Range/Performance
- DTC P0865: TCM Communication Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P0865: TCM Communication Circuit, Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0866: TCM Communication Circuit, High Input (BAJA, Legacy & Outback)
- DTC P0866: TCM Communication Circuit, High Input (Forester, IMPREZA & Outback Sport)
- DTC P1110: Atmospheric Pressure Sensor Circuit, Low Input
- DTC P1111: Atmospheric Pressure Sensor Circuit, High Input
- DTC P1134: Front Ho2S Micro-Computer Problem
- DTC P1137: Front Ho2S Circuit Range/Performance Problem
- DTC P1400: Fuel Tank Pressure Control Solenoid Valve Circuit, Low Input
- DTC P1420: Fuel Tank Pressure Control Solenoid Valve Circuit, High Input
- DTC P1443: EVAP System Vent Control Function Problem
- DTC P1446: Fuel Tank Sensor Control Valve Circuit, Low Input
- DTC P1447: Fuel Tank Sensor Control Valve Circuit, High Input
- DTC P1448: Fuel Tank Sensor Control Valve Range/Performance Problem
- DTC P1492: EGR Solenoid Valve Signal 1 Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P1493: EGR Solenoid Valve Signal 1 Circuit, High Input (BAJA, Legacy & Outback)
- DTC P1494: EGR Solenoid Valve Signal 2 Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P1495: EGR Solenoid Valve Signal 2 Circuit, High Input (BAJA, Legacy & Outback)
- DTC P1496: EGR Solenoid Valve Signal 3 Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P1497: EGR Solenoid Valve Signal 3 Circuit, High Input (BAJA, Legacy & Outback)
- DTC P1498: EGR Solenoid Valve Signal 4 Circuit, Low Input (BAJA, Legacy & Outback)
- DTC P1499: EGR Solenoid Valve Signal 4 Circuit, High Input (BAJA, Legacy & Outback)
- DTC P1510, DTC P1512, DTC P1514 & DTC P1516
- DTC P1511, DTC P1513, DTC P1515 & DTC P1517
- DTC P1518: Starter Switch Circuit Low Input
- DTC P1560: Back-Up Voltage Circuit Malfunction
- DTC P1698: Engine Torque Control Cut Signal Circuit, Low Input
- DTC P1699: Engine Torque Control Cut Signal Circuit, High Input
- DTC P1711: Engine Torque Control Signal No. 1 Circuit, Malfunction (A/T)
- DTC P1712: Engine Torque Control Signal No. 2 Circuit, Malfunction (A/T)