OBD Guide
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B230A

Rear Wiper Switch Input Circuit Low

B230A is an OBD-II diagnostic trouble code meaning: Rear Wiper Switch Input Circuit Low. Common causes: open or short circuit in the rear wiper wiring harness, faulty rear wiper switch. Estimated repair cost: $33–111.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Rear wiper does not work
  • Rear wiper intermittent operation
  • The rear windshield wiper operates without the driver's command

Causes

  • Open or short circuit in the rear wiper wiring harness
  • Faulty rear wiper switch
  • Poor contact in circuit connectors
  • Problems with the wiper control unit

How to Fix

  1. Check the integrity of the rear wiper wiring harness
  2. Check the rear wiper switch for malfunction.
  3. Clean and check contacts in circuit connectors
  4. Replace switch or wiring harness if necessary

Related codes

B230BB2300B2301

FAQ

What does the B230A code mean?

B230A is an OBD-II diagnostic trouble code that indicates: Rear Wiper Switch Input Circuit Low

What causes a B230A error code?

The most common causes of B230A include: Open or short circuit in the rear wiper wiring harness; Faulty rear wiper switch; Poor contact in circuit connectors; Problems with the wiper control unit.

How do I fix a B230A diagnostic trouble code?

To fix B230A: Check the integrity of the rear wiper wiring harness. Check the rear wiper switch for malfunction.. Clean and check contacts in circuit connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B230A?

Limited driving only, diagnose soon

How much does it cost to fix B230A?

The estimated repair cost for B230A is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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