B3142
Left Front Unlock Switch Circuit Low
B3142 is an OBD-II diagnostic trouble code meaning: Left Front Unlock Switch Circuit Low. Common causes: open or short circuit in wiring harness, faulty door unlock switch. Estimated repair cost: $6–56.
Symptoms
- Left front door unlock button not working
- Problems with central locking
- Flashing warning lights
Causes
- Open or short circuit in wiring harness
- Faulty door unlock switch
- Oxidized contacts
- Eating problems
- Body Control Module (BCM) Malfunction
How to Fix
- Check the integrity of the wiring harness
- Check the condition of the switch contacts
- Test the door unlock switch
- Check circuit power
- Replace switch or BCM if necessary
Related codes
Error B3142 by Vehicle Brand
FAQ
What does the B3142 code mean?
B3142 is an OBD-II diagnostic trouble code that indicates: Left Front Unlock Switch Circuit Low
What causes a B3142 error code?
The most common causes of B3142 include: Open or short circuit in wiring harness; Faulty door unlock switch; Oxidized contacts; Eating problems.
How do I fix a B3142 diagnostic trouble code?
To fix B3142: Check the integrity of the wiring harness. Check the condition of the switch contacts. Test the door unlock switch. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3142?
Yes, but get it checked soon
How much does it cost to fix B3142?
The estimated repair cost for B3142 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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