B1397
Power Door Unlock Circuit Short To Battery
B1397 is an OBD-II diagnostic trouble code meaning: Power Door Unlock Circuit Short To Battery. Common causes: damage to the wiring harness (chafing, overheating, corrosion), door opener relay malfunction. Estimated repair cost: $56–167.
Symptoms
- Doors won't open with key fob
- The interior door release button does not work
- Door opening circuit fuse tripping
- Check engine or comfort system light is on
Causes
- Damage to the wiring harness (chafing, overheating, corrosion)
- Door opener relay malfunction
- Short circuit in door lock solenoids
- Mechanical jamming of door locks
- Body Control Module (BCM) Problems
How to Fix
- Check the door opener circuit fuse
- Visually inspect the wiring harness in the area of the door hinges
- Test the door opening circuit for a short circuit.
- Check the resistance of the lock solenoids
- Conduct BCM diagnostics to ensure correct circuit control.
- Replace damaged components (harness, relays, solenoids)
Related codes
FAQ
What does the B1397 code mean?
B1397 is an OBD-II diagnostic trouble code that indicates: Power Door Unlock Circuit Short To Battery
What causes a B1397 error code?
The most common causes of B1397 include: Damage to the wiring harness (chafing, overheating, corrosion); Door opener relay malfunction; Short circuit in door lock solenoids; Mechanical jamming of door locks.
How do I fix a B1397 diagnostic trouble code?
To fix B1397: Check the door opener circuit fuse. Visually inspect the wiring harness in the area of the door hinges. Test the door opening circuit for a short circuit.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1397?
Yes, but get it checked soon
How much does it cost to fix B1397?
The estimated repair cost for B1397 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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