B10C4
Right Rear Unlock Pull Switch Signal Stuck High
B10C4 is an OBD-II diagnostic trouble code meaning: Right Rear Unlock Pull Switch Signal Stuck High. Common causes: short to +12v in the switch wiring harness, malfunction of the right rear unlock switch. Estimated repair cost: $33–111.
Symptoms
- Spontaneous unlocking of the right rear door
- Inability to lock doors using central locking
- Flashing hazard lights for no reason
Causes
- Short to +12V in the switch wiring harness
- Malfunction of the right rear unlock switch
- Body Control Module (BCM) Problems
- Corroded or damaged contacts in connectors
How to Fix
- Check the condition of the wiring harness to the right rear unlock switch
- Test the unlock switch for sticking
- Check the voltage at the switch contacts
- Inspect connectors and contacts for corrosion
- If necessary, replace the switch or repair the wiring harness
Related codes
FAQ
What does the B10C4 code mean?
B10C4 is an OBD-II diagnostic trouble code that indicates: Right Rear Unlock Pull Switch Signal Stuck High
What causes a B10C4 error code?
The most common causes of B10C4 include: Short to +12V in the switch wiring harness; Malfunction of the right rear unlock switch; Body Control Module (BCM) Problems; Corroded or damaged contacts in connectors.
How do I fix a B10C4 diagnostic trouble code?
To fix B10C4: Check the condition of the wiring harness to the right rear unlock switch. Test the unlock switch for sticking. Check the voltage at the switch contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B10C4?
Limited driving only, diagnose soon
How much does it cost to fix B10C4?
The estimated repair cost for B10C4 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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