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 DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC U0424: INVALID DATA RECEIVED FROM HVAC CONTROL MODULEGENERAL DESCRIPTIONDIAGNOSTIC METHOD
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
Diagnostic Method
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Diagnostic Method
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgment value
JUDGMENT VALUE SPECIFICATIONS
| Malfunction Criteria | Threshold Value |
|---|---|
| CAN data from A/C control panel | Freeze |
Time needed for diagnosis: 2.5 s
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.