Section 11 (Engine Control System (Diagnostics) (H4DO))
WARNING: This page is about a different variant/trim than selected.
- Basic Diagnostic Procedure
- Check List for Interview
- General Description
- Electrical Component Location
- Engine Control Module (ECM) I/O Signal
- Engine Condition Data
- Data Link Connector
- General Scan Tool
- Subaru Select Monitor
- Read Diagnostic Trouble Code (DTC)
- Inspection Mode
- Drive Cycle
- Clear Memory Mode
- System Operation Check Mode
- Malfunction Indicator Light
- Diagnostics for Engine Starting Failure
- List of Diagnostic Trouble Code (DTC)
- Diagnostic Procedure with Diagnostic Trouble Code (DTC)
- DTC P000A: A Camshaft Position Slow Response (Bank 1)
- DTC P000C: A Camshaft Position Slow Response (Bank 2)
- DTC P0010: "A" Camshaft Position Actuator Circuit/Open (Bank 1)
- DTC P0011: Intake Camshaft Position - Timing Over-Advanced Or System Performance (Bank 1)
- DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank1)
- DTC P0018: Crankshaft Position - Camshaft Position Correlation (Bank2)
- DTC P0020: "A" Camshaft Position Actuator Circuit/Open (Bank 2)
- DTC P0021: Intake Camshaft Position - Timing Over-Advanced Or System Performance (Bank 2)
- DTC P0030: Ho2S Heater Control Circuit (Bank 1 Sensor 1)
- DTC P0031: Ho2S Heater Control Circuit Low (Bank 1 Sensor 1)
- DTC P0032: Ho2S Heater Control Circuit High (Bank 1 Sensor 1)
- DTC P0037: Ho2S Heater Control Circuit Low (Bank 1 Sensor 2)
- DTC P0038: Ho2S Heater Control Circuit High (Bank 1 Sensor 2)
- DTC P0068: Map/MAF - Throttle Position Correlation
- DTC P0101: Mass Or Volume Air Flow Circuit Range/Performance
- DTC P0102: Mass Or Volume Air Flow Circuit Low Input
- DTC P0103: Mass Or Volume Air Flow Circuit High Input
- DTC P0107: Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- DTC P0108: Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- DTC P0111: Intake Air Temperature Sensor Range/Performance Problem
- DTC P0112: Intake Air Temperature Sensor 1 Circuit Low
- DTC P0113: Intake Air Temperature Sensor 1 Circuit High
- DTC P0116: Engine Coolant Temperature Sensor 1 Circuit Range/Performance
- DTC P0117: Engine Coolant Temperature Circuit Low
- DTC P0118: Engine Coolant Temperature Circuit High
- DTC P0122: Throttle/Pedal Position Sensor/Switch "A" Circuit Low
- DTC P0123: Throttle/Pedal Position Sensor/Switch "A" Circuit High
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0131: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- DTC P0132: O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- DTC P0134: O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- DTC P0137: O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- DTC P0138: O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
- DTC P013A: O2 Sensor Slow Response - Rich To Lean (Bank 1 Sensor 2)
- DTC P013B: O2 Sensor Slow Response - Lean To Rich (Bank 1 Sensor 2)
- DTC P013E: O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 2)
- DTC P013F: O2 Sensor Delayed Response - Lean To Rich (Bank 1 Sensor 2)
- DTC P0140: O2 Sensor Circuit No Activity Detected (Bank1 Sensor2)
- DTC P0141: O2 Sensor Heater Circuit (Bank1 Sensor2)
- DTC P014C: O2 Sensor Slow Response - Rich To Lean (Bank 1 Sensor 1)
- DTC P014D: O2 Sensor Slow Response - Lean To Rich (Bank 1 Sensor 1)
- DTC P015A: O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 1)
- DTC P015B: O2 Sensor Delayed Response - Lean To Rich (Bank 1 Sensor 1)
- DTC P0171: System Too Lean (Bank 1)
- DTC P0172: System Too Rich (Bank 1)
- DTC P0196: Engine Oil Temperature Sensor Circuit Range/Performance
- DTC P0197: Engine Oil Temperature Sensor Low
- DTC P0198: Engine Oil Temperature Sensor High
- DTC P0201: Injector #1
- DTC P0202: Injector #2
- DTC P0203: Injector #3
- DTC P0204: Injector #4
- DTC P0222: Throttle/Pedal Position Sensor/Switch "B" Circuit Low
- DTC P0223: Throttle/Pedal Position Sensor/Switch "B" Circuit High
- DTC P0300: Random/Multiple Cylinder Misfire Detected
- DTC P0301: Cylinder 1 Misfire Detected
- DTC P0302: Cylinder 2 Misfire Detected
- DTC P0303: Cylinder 3 Misfire Detected
- DTC P0304: Cylinder 4 Misfire Detected
- DTC P0327: Knock Sensor 1 Circuit Low (Bank 1 Or Single Sensor)
- DTC P0328: Knock Sensor 1 Circuit High (Bank 1 Or Single Sensor)
- DTC P0335: Crankshaft Position Sensor "A" Circuit
- DTC P0336: Crankshaft Position Sensor "A" Circuit Range/Performance
- DTC P0340: Camshaft Position Sensor "A" Circuit (Bank 1 Or Single Sensor)
- DTC P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 Or Single Sensor)
- DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2)
- DTC P0346: Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)
- DTC P0351: Ignition Coil A Primary/Secondary Circuit
- DTC P0352: Ignition Coil B Primary/Secondary Circuit
- DTC P0353: Ignition Coil C Primary/Secondary Circuit
- DTC P0354: Ignition Coil D Primary/Secondary Circuit
- DTC P0400: Exhaust Gas RECIRCULATION Flow
- DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
- DTC P0441: Evaporative Emission Cont. SYS. Incorrect Purge Flow
- DTC P0451: Evaporative Emission System Pressure Sensor/Switch Range/Performance
- DTC P0452: Evaporative Emission System Pressure Sensor/Switch Low
- DTC P0453: Evaporative Emission System Pressure Sensor/Switch High
- DTC P0455: Evaporative Emission System Leak Detected (Large Leak)
- DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0458: Evaporative Emission System Purge Control Valve Circuit Low
- DTC P0459: Evaporative Emission System Purge Control Valve Circuit High
- DTC P0461: Fuel Level Sensor "A" Circuit Range/Performance
- DTC P0462: Fuel Level Sensor "A" Circuit Low
- DTC P0463: Fuel Level Sensor "A" Circuit High
- DTC P0500: Vehicle Speed Sensor "A"
- DTC P0506: Idle Air Control System Rpm Lower Than Expected
- DTC P0507: Idle Air Control System Rpm Higher Than Expected
- DTC P050A: Cold Start Idle Air Control System Performance
- DTC P050B: Cold Start Ignition Timing Performance
- DTC P0512: Starter Request Circuit
- DTC P0516: Battery Temperature Sensor Circuit Low
- DTC P0517: Battery Temperature Sensor Circuit High
- DTC P0560: System Voltage
- DTC P0604: Internal Control Module Random Access Memory (Ram) Error
- DTC P0605: Internal Control Module Read Only Memory (ROM) Error
- DTC P0606: Control Module Processor
- DTC P060A: Internal Control Module Monitoring Processor Performance
- DTC P060B: Internal Control Module A/D Processing Performance
- DTC P0616: Starter Relay Circuit Low
- DTC P0617: Starter Relay Circuit High
- DTC P062F: Internal Control Module EEPROM Error
- DTC P0700: Transmission Control System (Mil Request)
- DTC P081A: Starter Disable Circuit Low
- DTC P0851: Park/Neutral Switch Input Circuit Low (At Model)
- DTC P0851: Neutral Switch Input Circuit Low (Mt Model)
- DTC P0852: Park/Neutral Switch Input Circuit High (At Model)
- DTC P0852: Neutral Switch Input Circuit High (Mt Model)
- DTC P1160: Return Spring Failure
- DTC P1449: Evaporative Emission Cont. SYS. Air Filter Clog
- DTC P1451: Evaporative Emission Cont. SYS.
- DTC P1492: EGR Solenoid Valve Signal #1 Circuit Malfunction (Low Input)
- DTC P1493: EGR Solenoid Valve Signal #1 Circuit Malfunction (High Input)
- DTC P1494: EGR Solenoid Valve Signal #2 Circuit Malfunction (Low Input)
- DTC P1495: EGR Solenoid Valve Signal #2 Circuit Malfunction (High Input)
- DTC P1496: EGR Solenoid Valve Signal #3 Circuit Malfunction (Low Input)
- DTC P1497: EGR Solenoid Valve Signal #3 Circuit Malfunction (High Input)
- DTC P1498: EGR Solenoid Valve Signal #4 Circuit Malfunction (Low Input)
- DTC P1499: EGR Solenoid Valve Signal #4 Circuit Malfunction (High Input)
- DTC P1530: Battery Current Sensor Circuit Low
- DTC P1531: Battery Current Sensor Circuit High
- DTC P1532: Battery Charging System
- DTC P2004: Intake Manifold Runner Control Stuck Open (Bank 1)
- DTC P2005: Intake Manifold Runner Control Stuck Open (Bank 2)
- DTC P2006: Intake Manifold Runner Control Stuck Closed (Bank 1)
- DTC P2007: Intake Manifold Runner Control Stuck Closed (Bank 2)
- DTC P2009: Intake Manifold Runner Control Circuit Low (Bank 1)
- DTC P2012: Intake Manifold Runner Control Circuit Low (Bank 2)
- DTC P2096: Post Catalyst Fuel Trim System Too Lean (Bank 1)
- DTC P2097: Post Catalyst Fuel Trim System Too Rich (Bank 1)
- DTC P2101: Throttle Actuator Control Motor Circuit Range/Performance
- DTC P2102: Throttle Actuator Control Motor Circuit Low
- DTC P2103: Throttle Actuator Control Motor Circuit High
- DTC P2109: Throttle/Pedal Position Sensor "A" Minimum Stop Performance
- DTC P2119: Throttle Actuator Control Throttle Body Range/Performance
- DTC P2122: Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input
- DTC P2123: Throttle/Pedal Position Sensor/Switch "D" Circuit High Input
- DTC P2127: Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input
- DTC P2128: Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
- DTC P2135: Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation
- DTC P2138: Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation
- DTC P2195: O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1)
- DTC P2196: O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1)
- DTC P219A: Bank 1 Air-Fuel Ratio Imbalance
- DTC P2401: Evaporative Emission System Leak Detection Pump Control Circuit Low
- DTC P2402: Evaporative Emission System Leak Detection Pump Control Circuit High
- DTC P2404: Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance
- DTC P2419: Evaporative Emission System Switching Valve Control Circuit Low
- DTC P2420: Evaporative Emission System Switching Valve Control Circuit High
- DTC P2610: ECM/Pcm Internal Engine Off Timer Performance
- DTC U0073: Control Module Communication Bus "A" Off
- DTC U0101: Lost Communication With TCM
- DTC U0122: Lost Communication With Vehicle Dynamics Control Module
- DTC U0155: Lost Communication With Instrument Panel Cluster (IPC) Control Module
- DTC U0402: Invalid Data Received From TCM
- DTC U0416: Invalid Data Received From Vehicle Dynamics Control Module
- DTC U0423: Invalid Data Received From Instrument Panel Cluster Control Module
- General Diagnostic Table