B3797
All Door Dead Lock Circuit
B3797 is an OBD-II diagnostic trouble code meaning: All Door Dead Lock Circuit. Common causes: open or short circuit in wiring harness, central locking relay malfunction. Estimated repair cost: $56–167.
Symptoms
- Central locking doesn't work
- Doors do not lock when button is pressed
- Door indicators do not work when locked
- There is no deadlock function
Causes
- Open or short circuit in wiring harness
- Central locking relay malfunction
- Problems with the door control unit
- Mechanical fault of door locks
- Corrosion of contacts in connectors
How to Fix
- Carry out diagnostics with a scanner to clarify the nature of the malfunction
- Check the integrity of the wiring harness between the control unit and the door locks
- Test the central locking relay
- Check the power and ground at the contacts of the control unit
- Inspect the lock mechanism for mechanical damage
- Clean or replace oxidized contacts in connectors
Related codes
Error B3797 by Vehicle Brand
FAQ
What does the B3797 code mean?
B3797 is an OBD-II diagnostic trouble code that indicates: All Door Dead Lock Circuit
What causes a B3797 error code?
The most common causes of B3797 include: Open or short circuit in wiring harness; Central locking relay malfunction; Problems with the door control unit; Mechanical fault of door locks.
How do I fix a B3797 diagnostic trouble code?
To fix B3797: Carry out diagnostics with a scanner to clarify the nature of the malfunction. Check the integrity of the wiring harness between the control unit and the door locks. Test the central locking relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3797?
Limited driving only, diagnose soon
How much does it cost to fix B3797?
The estimated repair cost for B3797 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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