B0312
Driver Seat Forward/Back Switch Circuit
The seat module has detected a fault in the fore/aft adjustment switch on the driver seat. Manual adjustment of the seat position may be limited or not work at all.
- 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.
- Seat adjustment switch failedCommon
- Wiring or connector faultPossible
Parts involved
- Seat Adjust Switch
- Seat Control Module
B0312 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.