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.
2021 Subaru Crosstrek HybridFACTORY OEM SERVICE PROCEDURE
Inspection Mode AF
| DTC | Description and trouble part | Condition | Number of driving cycles on the detecting condition |
|---|---|---|---|
| P04B6 | FUEL FILL DOOR STUCK CLOSED | - | 2 |
NOTE:
- Perform the inspection mode after warming up the engine except that the engine coolant temperature at engine start is specified .
- As there is a procedure where 20 L (5.3 US gal, 4.4 Imp gal) or more of fuel is refilled, adjust to the fuel level that allows refueling .
- Make sure that the battery voltage is 12 V or more.
- Using the Subaru Select Monitor, perform the clear memory of [Engine]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
- Turn the ignition switch to ON.
- Turn the ignition switch to OFF.
- Refill 20 L (5.3 US gal, 4.4 Imp gal) or more of fuel.
- Turn to READY ON and wait for 10 seconds or more.
- Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .
Factory Service Tools
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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.