B3138
All Door Lock Circuit High
B3138 is an OBD-II diagnostic trouble code meaning: All Door Lock Circuit High. Common causes: short circuit in wiring harness, body control module malfunction. Estimated repair cost: $33–167.
Symptoms
- All door locks do not work
- Locks operate spontaneously
- The lock button light does not light up
Causes
- Short circuit in wiring harness
- Body control module malfunction
- Problems with lock relays
- Oxidation of contacts
How to Fix
- Check the lock circuit fuses
- Inspect the wiring harness for damage
- Check the operation of the lock relay
- Scan the body control module for errors
Related codes
Error B3138 by Vehicle Brand
FAQ
What does the B3138 code mean?
B3138 is an OBD-II diagnostic trouble code that indicates: All Door Lock Circuit High
What causes a B3138 error code?
The most common causes of B3138 include: Short circuit in wiring harness; Body control module malfunction; Problems with lock relays; Oxidation of contacts.
How do I fix a B3138 diagnostic trouble code?
To fix B3138: Check the lock circuit fuses. Inspect the wiring harness for damage. Check the operation of the lock relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3138?
Limited driving only, diagnose soon
How much does it cost to fix B3138?
The estimated repair cost for B3138 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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