B3125
Driver Door Only Unlock Circuit
B3125 is an OBD-II diagnostic trouble code meaning: Driver Door Only Unlock Circuit. Common causes: open or short circuit in wiring harness, solenoid valve malfunction. Estimated repair cost: $56–167.
Symptoms
- The driver's door does not open when the button is pressed
- The driver's door opens with a delay
- Other doors work fine
Causes
- Open or short circuit in wiring harness
- Solenoid valve malfunction
- Problems with the door control unit
- Contact corrosion
How to Fix
- Check the wiring harness for opens and shorts
- Check the operation of the solenoid valve
- Diagnose the door control unit
- Clean contacts from corrosion
Related codes
Error B3125 by Vehicle Brand
FAQ
What does the B3125 code mean?
B3125 is an OBD-II diagnostic trouble code that indicates: Driver Door Only Unlock Circuit
What causes a B3125 error code?
The most common causes of B3125 include: Open or short circuit in wiring harness; Solenoid valve malfunction; Problems with the door control unit; Contact corrosion.
How do I fix a B3125 diagnostic trouble code?
To fix B3125: Check the wiring harness for opens and shorts. Check the operation of the solenoid valve. Diagnose the door control unit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3125?
Limited driving only, diagnose soon
How much does it cost to fix B3125?
The estimated repair cost for B3125 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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