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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 29 (ENGINE CONTROL SYSTEM (HEV) (DIAGNOSTICS) (3 OF 4))DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P1621: ENGINE DOES NOT STARTDIAGNOSTIC METHOD
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
Diagnostic Method
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Diagnostic Method
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
Judge as NG if a status where the judgment value is satisfied lasts for the predetermined time or more.
Judgment value
JUDGMENT VALUE SPECIFICATIONS
| Malfunction Criteria | Threshold Value |
|---|---|
| Status of engine start command from HV system | With start command |
Time needed for diagnosis:
- Diagnosis period: 10 s (water temperature 10°C (50°F))
- Diagnosis period: 5 s (water temperature 20°C (68°F))
Malfunction indicator light illumination: Does not illuminate.
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.