B3722
Rear Wiper Relay Drive Circuit Low
B3722 is an OBD-II diagnostic trouble code meaning: Rear Wiper Relay Drive Circuit Low. Common causes: broken or damaged wires in the harness, faulty rear wiper relay. Estimated repair cost: $11–56.
Symptoms
- Rear wiper does not work
- Rear wiper intermittent operation
- Rear windshield wiper turns on spontaneously
Causes
- Broken or damaged wires in the harness
- Faulty rear wiper relay
- Corrosion of contacts in connectors
- Control module problem
How to Fix
- Check the integrity of the rear wiper wiring harness
- Inspect connectors for corrosion or damage
- Check the operation of the rear wiper relay
- Diagnose the control module
Related codes
Error B3722 by Vehicle Brand
FAQ
What does the B3722 code mean?
B3722 is an OBD-II diagnostic trouble code that indicates: Rear Wiper Relay Drive Circuit Low
What causes a B3722 error code?
The most common causes of B3722 include: Broken or damaged wires in the harness; Faulty rear wiper relay; Corrosion of contacts in connectors; Control module problem.
How do I fix a B3722 diagnostic trouble code?
To fix B3722: Check the integrity of the rear wiper wiring harness. Inspect connectors for corrosion or damage. Check the operation of the rear wiper relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3722?
Do not drive — repair immediately
How much does it cost to fix B3722?
The estimated repair cost for B3722 is $11–56. Actual cost depends on your vehicle, location, and labor rates.
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