B3133
All Door Unlock Circuit High
B3133 is an OBD-II diagnostic trouble code meaning: All Door Unlock Circuit High. Common causes: broken or damaged wiring harness, corrosion of contacts in connectors. Estimated repair cost: $56–167.
Symptoms
- Central locking does not unlock all doors
- Periodic malfunctions of the central locking system
- Alarm going off without unlocking doors
Causes
- Broken or damaged wiring harness
- Corrosion of contacts in connectors
- Door control module malfunction
- Problems with the central locking relay
- Malfunction of door unlock solenoids
How to Fix
- Check the integrity of the wiring harness in the door and along the body
- Inspect and clean the contacts in the unlocking circuit connectors
- Check the functionality of the central locking relay
- Test door unlock solenoids
- If necessary, replace the door control module
Related codes
Error B3133 by Vehicle Brand
FAQ
What does the B3133 code mean?
B3133 is an OBD-II diagnostic trouble code that indicates: All Door Unlock Circuit High
What causes a B3133 error code?
The most common causes of B3133 include: Broken or damaged wiring harness; Corrosion of contacts in connectors; Door control module malfunction; Problems with the central locking relay.
How do I fix a B3133 diagnostic trouble code?
To fix B3133: Check the integrity of the wiring harness in the door and along the body. Inspect and clean the contacts in the unlocking circuit connectors. Check the functionality of the central locking relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3133?
Yes, but get it checked soon
How much does it cost to fix B3133?
The estimated repair cost for B3133 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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