B3810

Headlamp Washer Relay Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–111 (est.)

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

B3800 B3801 B3811