B3810
Headlamp Washer Relay Circuit
B3810 is an OBD-II diagnostic trouble code meaning: Headlamp Washer Relay Circuit. Common causes: faulty headlight washer relay, open or short circuit in the circuit. Estimated repair cost: $22–111.
Symptoms
- Headlight washer does not work
- Dashboard warning light
- Headlights remain dirty
Causes
- Faulty headlight washer relay
- Open or short circuit in the circuit
- Damaged wiring harness
- Bad fuse
- Body Control Module (BCM) Problems
How to Fix
- Check the headlight washer circuit fuse
- Test the relay with a multimeter or replacement
- Inspect the wiring harness for damage
- Check the operation of the headlight washer pump
- Diagnose the body control unit (if necessary)
Related codes
Error B3810 by Vehicle Brand
FAQ
What does the B3810 code mean?
B3810 is an OBD-II diagnostic trouble code that indicates: Headlamp Washer Relay Circuit
What causes a B3810 error code?
The most common causes of B3810 include: Faulty headlight washer relay; Open or short circuit in the circuit; Damaged wiring harness; Bad fuse.
How do I fix a B3810 diagnostic trouble code?
To fix B3810: Check the headlight washer circuit fuse. Test the relay with a multimeter or replacement. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3810?
Limited driving only, diagnose soon
How much does it cost to fix B3810?
The estimated repair cost for B3810 is $22–111. Actual cost depends on your vehicle, location, and labor rates.
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