Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2007IMPREZA BASE, 4D WAGON, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS (DIAGNOSTICS) (H4SO)INSPECTION MODEPROCEDURENOTES
2007 Subaru Impreza Base, 4D Wagon, Automatic
Inspection Mode: Procedure: Notes
2007 Subaru Impreza Base, 4D Wagon, AutomaticSECTION Notes
Perform the diagnosis shown in the following DTC table.
When performing the diagnosis not listed in "List of Diagnostic Trouble Code (DTC)", refer to the item on the drive cycle. <Ref. to DRIVE CYCLE .>
DTC DIAGNOSIS CHART
| DTC | Item |
|---|---|
| P0031 | HO2S Heater Control Circuit Low (Bank 1 Sensor 1) |
| P0032 | HO2S Heater Control Circuit High (Bank 1 Sensor 1) |
| P0037 | HO2S Heater Control Circuit Low (Bank 1 Sensor 2) |
| P0038 | HO2S Heater Control Circuit High (Bank 1 Sensor 2) |
| P0077 | Intake Valve Control Solenoid Circuit High (Bank 1) |
| P0083 | Intake Valve Control Solenoid Circuit High (Bank 2) |
| P0102 | Mass or Volume Air Flow Circuit Low Input |
| P0103 | Mass or Volume Air Flow Circuit High Input |
| P0107 | Manifold Absolute Pressure/Barometric Pressure Circuit Low Input |
| P0108 | Manifold Absolute Pressure/Barometric Pressure Circuit High Input |
| P0112 | Intake Air Temperature Sensor 1 Circuit Low |
| P0113 | Intake Air Temperature Sensor 1 Circuit High |
| P0117 | Engine Coolant Temperature Circuit Low |
| P0118 | Engine Coolant Temperature Circuit High |
| P0122 | Throttle/Pedal Position Sensor/Switch "A" Circuit Low |
| P0123 | Throttle/Pedal Position Sensor/Switch "A" Circuit High |
| P0131 | O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1) |
| P0132 | O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) |
| P0137 | O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2) |
| P0138 | O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) |
| P0140 | O2 Sensor Circuit No Activity Detected (Bank1 Sensor2) |
| P0182 | Fuel Temperature Sensor "A" Circuit Low Input |
| P0183 | Fuel Temperature Sensor "A" Circuit High Input |
| P0197 | Engine Oil Temperature Sensor Low |
| P0198 | Engine Oil Temperature Sensor High |
| P0222 | Throttle/Pedal Position Sensor/Switch "B" Circuit Low |
| P0223 | Throttle/Pedal Position Sensor/Switch "B" Circuit High |
| P0327 | Knock Sensor 1 Circuit Low (Bank 1 or Single Sensor) |
| P0328 | Knock Sensor 1 Circuit High (Bank 1 or Single Sensor) |
| P0335 | Crankshaft Position Sensor "A" Circuit |
| P0336 | Crankshaft Position Sensor "A" Circuit Range/Performance |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) |
| P0341 | Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 or Single Sensor) |
| P0447 | Evaporative Emission Control System Vent Control Circuit Open |
| P0448 | Evaporative Emission Control System Vent Control Circuit Shorted |
| P0452 | Evaporative Emission Control System Pressure Sensor Low Input |
| P0453 | Evaporative Emission Control System Pressure Sensor High Input |
| P0458 | Evaporative Emission System Purge Control Valve Circuit Low |
| P0462 | Fuel Level Sensor "A" Circuit Low |
| P0463 | Fuel Level Sensor "A" Circuit High |
| P0502 | Vehicle Speed Sensor "A" Circuit Low Input |
| P0503 | Vehicle Speed Sensor "A" Intermittent/Erratic/High |
| P0512 | Starter Request Circuit |
| P0519 | Idle Air Control System Performance |
| P0600 | Serial Communication Link |
| P0604 | Internal Control Module Random Access Memory (RAM) Error |
| P0605 | Internal Control Module Read Only Memory (ROM) Error |
| P0607 | Control Module Performance |
| P0638 | Throttle Actuator Control Range/Performance (Bank 1) |
| P0691 | Fan 1 Control Circuit Low |
| P0692 | Fan 1 Control Circuit High |
| P0700 | Transmission Control System (MIL Request) |
| P0851 | Neutral Switch Input Circuit Low |
| P0852 | Neutral Switch Input Circuit High |
| P1152 | O2 Sensor Circuit Range/Performance (Low) (Bank 1 Sensor 1) |
| P1153 | O2 Sensor Circuit Range/Performance (High) (Bank 1 Sensor 1) |
| P1160 | Return Spring Failure |
| P1400 | Fuel Tank Pressure Control Solenoid Valve Circuit Low |
| P1420 | Fuel Tank Pressure Control Sol. Valve Circuit High |
| P1491 | Positive Crankcase Ventilation (Blow-by) Function Problem |
| P1518 | Starter Switch Circuit Low Input |
| P1560 | Back-up Voltage Circuit Malfunction |
| P2101 | Throttle Actuator Control Motor Circuit Range/Performance |
| P2102 | Throttle Actuator Control Motor Circuit Low |
| P2109 | Throttle/Pedal Position Sensor "A" Minimum Stop Performance |
| P2122 | Throttle/Pedal Position Sensor/Switch"D" Circuit Low Input |
| P2123 | Throttle/Pedal Position Sensor/Switch "D" Circuit High Input |
| P2127 | Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input |
| P2128 | Throttle/Pedal Position Sensor/Switch "E" Circuit High Input |
| P2135 | Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation |
| P2138 | Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation |
| P2227 | Barometric Pressure Circuit Range/Performance |
| P2228 | Barometric Pressure Circuit Malfunction (Low Input) |
| P2229 | Barometric Pressure Circuit Malfunction (High Input) |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.