B0120
Passenger Pelvic/Thorax Airbag Deployment Control
The SRS module has detected a deployment control fault for the passenger pelvic/thorax airbag.
- 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.
- Loose seat connectorCommon
- Wiring damaged in seat trackPossible
Parts involved
- Passenger Thorax Airbag
- Srs Seat Wiring
B0120 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.