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 MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (2.0L (EXCEPT FOR HEV)) (DIAGNOSTICS) - INTRODUCTIONINSPECTION MODEPROCEDUREINSPECTION MODE I
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
Inspection Mode I
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Inspection Mode I
| DTC | Description and trouble part | Condition | Number of driving cycles on the detecting condition |
|---|---|---|---|
| P0455 | EVAP SYSTEM (CPC) LEAK DETECTED (LARGE LEAK) |
|
2 |
| P0456 | EVAP SYSTEM (CPC) LEAK DETECTED (VERY SMALL LEAK) | 2 | |
| P1451 | EVAP SYSTEM CLOG DETECTED (PIPE) | 2 | |
| P2402 | EVAP SYSTEM LEAK DETECTION PUMP CONTROL CIRCUIT HIGH | 1 | |
| P2404 | EVAP SYSTEM LEAK DETECTION PUMP SENSE CIRCUIT RANGE/PERFORMANCE | 2 | |
| P2420 | EVAP SYSTEM SWITCHING VALVE CONTROL CIRCUIT HIGH | 1 |
WARNING:
When performing inspection mode I on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.
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.