B0074
Driver Seatbelt Pretensioner Loop Short to Battery
The driver seatbelt pretensioner deployment circuit is shorted to battery voltage, risking unintended firing.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: hard
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.
- Wire shorted to powered conductorCommon
Parts involved
- Driver Seatbelt Pretensioner
- Srs Seat Wiring
B0074 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.