Section 42 (Engine Controls - Self-Diagnostics - 2.5L)
WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, 2003 Subaru Impreza, 2003 Subaru Forester, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
- 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)