B0012
Right Front/Passenger Frontal Stage 2 Deployment Control
The SRS module has detected a fault in the second-stage deployment circuit of the front passenger airbag. The dual-stage charge cannot be triggered as designed and the airbag warning lamp is illuminated.
- 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.
- Stage 2 squib circuit openCommon
- Faulty connector at passenger airbagPossible
- Passenger airbag module internal faultLess likely
Parts involved
- Passenger Airbag Module
- Srs Control Module
- Srs Wiring
B0012 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.