OBD Guide
ENFRDEESPT

B231B

Rear Wiper Motor Control Circuit Low

B231B is an OBD-II diagnostic trouble code meaning: Rear Wiper Motor Control Circuit Low. Common causes: open or short circuit in wiring harness, rear wiper relay malfunction. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Rear wiper doesn't work
  • Rear wiper intermittent operation
  • The wiper is running slower than usual

Causes

  • Open or short circuit in wiring harness
  • Rear wiper relay malfunction
  • Rear wiper motor problems
  • Corrosion of contacts or connectors
  • Control module malfunction

How to Fix

  1. Check the integrity of the wiring harness and contacts
  2. Check the operation of the rear wiper relay
  3. Check the voltage at the wiper motor
  4. Replace faulty components (relay, motor, wiring harness)

Related codes

B231AB231C

FAQ

What does the B231B code mean?

B231B is an OBD-II diagnostic trouble code that indicates: Rear Wiper Motor Control Circuit Low

What causes a B231B error code?

The most common causes of B231B include: Open or short circuit in wiring harness; Rear wiper relay malfunction; Rear wiper motor problems; Corrosion of contacts or connectors.

How do I fix a B231B diagnostic trouble code?

To fix B231B: Check the integrity of the wiring harness and contacts. Check the operation of the rear wiper relay. Check the voltage at the wiper motor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B231B?

Limited driving only, diagnose soon

How much does it cost to fix B231B?

The estimated repair cost for B231B is $22–111. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat