B0188
Rear Wiper Motor Circuit
The body control module has detected a fault in the rear wiper motor circuit. Possible faults include an open or shorted motor winding, a stuck mechanism, or wiring damage in the tailgate harness.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- Rear wiper motor failedCommon
- Tailgate harness broken at hingePossible
- Rear wiper fuse blownLess likely
Parts involved
- Rear Wiper Motor
- Body Control Module
- Tailgate Harness
B0188 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.