Rear Wiper Motor Circuit Short
The B0442 code means the vehicle's onboard diagnostic system has detected: Rear Wiper Motor Circuit Short. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $60 - $300 (parts and labor)
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Common Symptoms
- Rear wiper does not operate
- Rear wiper does not return to park
- Rear wiper runs continuously
- Rear wiper makes noise but blade does not move
Probable Causes (Ranked by Likelihood)
- Faulty rear wiper motor Very High
- Failed rear wiper relay High
- Damaged wiring in liftgate or hatch Moderate
- Rear wiper switch failure Low
Step-by-Step Diagnostic Procedure
-
Test rear wiper motor with direct power
-
Check rear wiper fuse and relay
-
Inspect wiring through liftgate hinges
-
Verify rear wiper switch signals
Frequently Asked Questions
Why does my rear wiper not park?
The park position switch or motor gear is likely faulty, preventing the motor from stopping at the correct position.
Is rear wiper repair difficult?
Rear wiper motors are generally accessible through the interior liftgate panel and are moderate difficulty.
Can I drive without the rear wiper?
Yes, the rear wiper is a convenience feature. Front visibility is more critical for safety.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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