Section 9 (Engine Controls - Self-Diagnostics - 2.5L)
WARNING: This page is about a different car, the 2002 Subaru Outback, 2002 Subaru Legacy, 2002 Subaru Impreza, and 2002 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- On-Board Diagnostics
- Two-Trip Detection Logic
- Freeze-Frame Data
- Malfunction Indicator Light (Mil) Inspection
- Malfunction Indicator Light Diagnosis
- Testing Procedure
- Retrieving Diagnostic Trouble Codes
- Clearing Diagnostic Trouble Codes
- Compulsory Valve Operation Check Mode
- Engine Control Module Location
- Verification Procedure
- Programming
- Drive Cycles
- Summary
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0031: Front Oxygen Sensor (A/F) Heater Circuit Low Input
- DTC P0032: Front Oxygen Sensor (A/F) Heater Circuit High Input
- DTC P0037: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Malfunction (Forester, IMPREZA & Outback Sport)
- DTC P0037: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit Low Input (Legacy & Outback)
- DTC P0038: Rear Heated Oxygen Sensor (Ho2S) Heater Circuit High Input
- DTC P0065: Air Assist Injector Solenoid Valve Malfunction
- DTC P0066: Air Assist Injector Solenoid Valve Circuit Low Input
- DTC P0067: Air Assist Injector Solenoid Valve Circuit High Input
- DTC P0106: Pressure Sensor Circuit Range/Performance Problem (Low Input)
- DTC P0107: Pressure Sensor Circuit Low Input
- DTC P0108: Pressure 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 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 (High Input)
- 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 Fuel Control
- DTC P0128: Thermostat Malfunction
- DTC P0130: Front Oxygen Sensor (A/F) Circuit Range/Performance Problem (Lean)
- DTC P0131: Front Oxygen Sensor (A/F) Circuit Malfunction (Open Circuit)
- DTC P0132: Front Oxygen Sensor (A/F) Circuit Malfunction (Short Circuit)
- DTC P0133: Front Oxygen Sensor (A/F) Circuit Slow Response
- DTC P0136: Rear Heated Oxygen Sensor (Ho2S) Circuit Malfunction (Forester, IMPREZA & Outback Sport)
- DTC P0137: Rear Heated Oxygen Sensor (Ho2S) Circuit Low Input (Legacy & Outback)
- P0138: Rear Heated Oxygen Sensor (Ho2S) Circuit High Input (Legacy & Outback)
- DTC P0139: Rear Heated Oxygen Sensor (Ho2S) Circuit Slow Response
- DTC P0171: Fuel Trim Malfunction (A/F Too Lean)
- DTC P0172: Fuel Trim Malfunction (A/F Too Rich)
- 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 (Forester, IMPREZA & Outback Sport)
- DTC P0183: Fuel Temperature Sensor "A" Circuit High Input (Legacy & Outback)
- DTC P0301, DTC P0302, DTC P0303 Or 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 P0420: Catalyst System Efficiency Below Threshold (Forester)
- DTC P0420: Catalyst System Efficiency Below Threshold (IMPREZA, Outback Sport, Legacy & Outback)
- DTC P0442: EVAP System Malfunction
- DTC P0444: EVAP System Purge Control Valve Circuit Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0445: EVAP System Purge Control Valve Circuit High Input (Forester, IMPREZA & Outback Sport)
- 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 (Forester, IMPREZA & Outback Sport)
- DTC P0452: EVAP System Pressure Sensor Low Input (Legacy & Outback)
- DTC P0453: EVAP System Pressure Sensor High Input (Forester, IMPREZA & Outback Sport)
- DTC P0453: EVAP System Pressure Sensor High Input (Legacy & Outback)
- DTC P0456: EVAP System Malfunction
- DTC P0457: EVAP System Malfunction (Legacy & Outback)
- DTC P0458: EVAP System Purge Control Valve Circuit Low Input (Legacy & Outback)
- DTC P0459: EVAP System Purge Control Solenoid Valve Circuit High Input
- DTC P0461: Fuel Level Sensor Circuit Range/Performance Problem (Forester, IMPREZA & Outback Sport)
- DTC P0462: Fuel Level Sensor Circuit Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0462: Fuel Level Sensor Circuit Low Input (Legacy & Outback)
- DTC P0463: Fuel Level Sensor Circuit High Input (Forester, IMPREZA & Outback Sport)
- DTC P0463: Fuel Level Sensor Circuit High Input (Legacy & Outback)
- DTC P0464: Fuel Level Sensor Circuit Intermittent Input (Forester, IMPREZA & Outback Sport)
- DTC P0464: Fuel Level Sensor Circuit Intermittent Input (Legacy & Outback)
- DTC P0480: Cooling Fan Relay No. 1 Circuit Low Input (Forester, IMPREZA & Outback Sport)
- DTC P0483: Cooling Fan Function Problem
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction (Forester, IMPREZA & Outback Sport)
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction (Legacy & Outback)
- DTC P0506: Idle Control System Rpm Lower Than Expected
- DTC P0507: Idle Control System Rpm Higher Than Expected
- DTC P0512: Starter Switch Circuit High Input
- DTC P0604: Internal Control Module Memory Check Sum Error
- P0691: Cooling Fan Relay No. 1 Circuit Low Input (Legacy & Outback)
- DTC P0692: Cooling Fan Relay No. 1 Circuit High Input (Legacy & Outback)
- DTC P0703: Brake Switch Input Malfunction (A/T)
- DTC P0731, DTC P0732, DTC P0733 & DTC P0734
- DTC P0741: Torque Converter Clutch System Malfunction (A/T)
- DTC P0851: Inhibitor Switch Circuit Low Input (A/T - Legacy & Outback)
- DTC P0851: Neutral Position Switch Circuit Low Input (M/T - Legacy & Outback)
- DTC P0852: Inhibitor Switch Circuit High Input (A/T - Legacy & Outback)
- DTC P0852: Neutral Position Switch Circuit High Input (M/T - Legacy & Outback)
- DTC P0864: A/T Diagnosis Input Signal Circuit Malfunction (Legacy & Outback)
- DTC P0865: A/T Diagnosis Input Signal Circuit Low Input (Legacy & Outback)
- DTC P0866: A/T Diagnosis Input Signal Circuit High Input (Legacy & Outback)
- DTC P1110: Atmospheric Pressure Sensor Circuit Low Input (Forester, IMPREZA & Outback Sport)
- DTC P1110: Atmospheric Pressure Sensor Circuit Low Input (Legacy & Outback)
- DTC P1111: Atmospheric Pressure Sensor Circuit High Input (Forester, IMPREZA & Outback Sport)
- DTC P1111: Atmospheric Pressure Sensor Circuit High Input (Legacy & Outback)
- DTC P1112: Atmospheric Pressure Sensor Circuit Range/Performance Problem (Forester, IMPREZA & Outback Sport)
- DTC P1112: Atmospheric Pressure Sensor Circuit Range/Performance Problem (Legacy & Outback)
- DTC P1137: Front Oxygen Sensor (A/F) Circuit Range/Performance Problem
- DTC P1142: Throttle Position (TP) Sensor Circuit Range/Performance Problem (Low Input)
- DTC P1146: Pressure Sensor Circuit Range/Performance Problem (High Input)
- DTC P1400: Fuel Tank Pressure Control Solenoid Valve Circuit Low Input
- DTC P1420: Fuel Tank Pressure Control Solenoid Valve Circuit High Input
- DTC P1442: Fuel Level Sensor Circuit Range/Performance Problem 2
- DTC P1443: EVAP System Vent Control Function Problem
- DTC P1446: EVAP System Atmospheric Pressure Solenoid Valve Circuit Low Input (Legacy & Outback)
- DTC P1447: EVAP System Atmospheric Pressure Solenoid Valve Circuit High Input (Legacy & Outback)
- DTC P1448: EVAP System Atmospheric Pressure Solenoid Valve Circuit Range/Performance Problem (Legacy & Outback)
- DTC P1480: Cooling Fan Relay No. 1 Circuit High Input (Forester, IMPREZA & Outback Sport)
- DTC P1507: Idle Control System Malfunction (Fail-Safe)
- DTC P1510, DTC P1512, DTC P1514 & DTC P1516
- DTC P1511, DTC P1513, DTC P1515 & DTC P1517
- DTC P1518: Starter Switch Circuit Low Input
- DTC P1540: Vehicle Speed Sensor (VSS) Malfunction 2
- DTC P1560: Back-Up Voltage Circuit Malfunction
- DTC P1590: Inhibitor Switch Circuit High Input (A/T - Forester, IMPREZA & Outback Sport)
- DTC P1591: Inhibitor Switch Circuit Low Input (A/T - Forester, IMPREZA & Outback Sport)
- DTC P1592: Neutral Position Switch Circuit Malfunction (M/T - Forester, IMPREZA & Outback Sport)
- DTC P1594: A/T Diagnosis Input Signal Circuit Malfunction (Forester, IMPREZA & Outback Sport)
- DTC P1595: A/T Diagnosis Input Signal Circuit Low Input (Forester, IMPREZA & Outback Sport)
- DTC P1596: A/T Diagnosis Input Signal Circuit High Input (Forester, IMPREZA & Outback Sport)
- DTC P1698: Engine Torque Control Cut Signal Circuit Low Input (A/T)
- DTC P1699: Engine Torque Control Cut Signal Circuit High Input (A/T)
- DTC P1701: Cruise Control Set Signal Circuit Malfunction (A/T)
- DTC P1711: Engine Torque Control Signal No. 1 Circuit Malfunction (A/T)
- DTC P1712: Engine Torque Control Signal No. 2 Circuit Malfunction (A/T)