Fault Code B0420
Code meaning, symptoms, possible causes, part number, and estimated cost.
B0420
Power Window Motor Circuit (Driver Rear)
This code indicates a fault in the driver's rear power window motor circuit. This causes the rear window on the driver's side to not operate correctly.
Part Details
Part Name
Power Window Motor
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1000
Engine Location
Inside the driver's side rear door
Symptoms
- Driver's rear window does not go up/down
- Window moves partially
- Central window control not working
- Unusual noise from the window mechanism
Possible Causes
- 1Faulty window motor
- 2Damaged or shorted wiring
- 3Faulty window switch
- 4Stuck window regulator mechanism
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