Section 12 (Engine Controls (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 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 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 U0140 Lost Communication With Body Control Module
- DTC U0402 Invalid Data Received From TCM
- DTC U0416 Invalid Data Received From Vehicle Dynamics Control Module
- DTC U0422 Invalid Data Received From Body Control Module
- General Diagnostic Table