B3811
Rear Washer Relay Circuit
B3811 is an OBD-II diagnostic trouble code meaning: Rear Washer Relay Circuit. Common causes: open or short circuit in the relay circuit, faulty rear washer relay. Estimated repair cost: $6–56.
Symptoms
- Rear washer does not work
- Fault warning flashes
- I can't hear the relay click when the washer is activated
Causes
- Open or short circuit in the relay circuit
- Faulty rear washer relay
- Corrosion of relay contacts or connectors
- Wiring Harness Problems
- Control module malfunction
How to Fix
- Check the rear washer fuse
- Check the operation of the rear washer relay
- Inspect relay contacts and connectors for corrosion
- Diagnose the relay circuit using a multimeter
- Check wiring harness for damage
Error B3811 by Vehicle Brand
FAQ
What does the B3811 code mean?
B3811 is an OBD-II diagnostic trouble code that indicates: Rear Washer Relay Circuit
What causes a B3811 error code?
The most common causes of B3811 include: Open or short circuit in the relay circuit; Faulty rear washer relay; Corrosion of relay contacts or connectors; Wiring Harness Problems.
How do I fix a B3811 diagnostic trouble code?
To fix B3811: Check the rear washer fuse. Check the operation of the rear washer relay. Inspect relay contacts and connectors for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3811?
Limited driving only, diagnose soon
How much does it cost to fix B3811?
The estimated repair cost for B3811 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat