B0337
Passenger Seat Heater Circuit
The body control module has detected a fault in the passenger seat heater circuit. Same fault profile as B0335 but for the passenger seat.
- 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.
- Heater element brokenCommon
- Seat connector corrodedPossible
Parts involved
- Seat Heater Element
- Seat Wiring Harness
B0337 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.