B0090
Driver Side Pretensioner Stage 2 Deployment Control
Driver Side Pretensioner Stage 2 Deployment Control: the restraints module has detected a fault in this airbag/pretensioner deployment circuit, which may prevent correct deployment in a crash. Safety-critical.
- 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 open or shortedCommon
- Connector under driver seat damagedPossible
- SRS control module faultLess likely
Parts involved
- Driver Pretensioner
- Srs Control Module
- Srs Wiring
B0090 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.