B0002
Driver Frontal Stage 2 Deployment Control
The SRS module has detected a fault in the deployment control circuit for the second stage of the driver frontal airbag. Dual-stage airbags use two charges for severity-dependent deployment — this code indicates the high-severity stage cannot be triggered reliably.
- 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.
- Clock spring damaged or wornCommon
- Stage 2 squib circuit open or shortedPossible
- SRS control module faultLess likely
Parts involved
- Driver Airbag Module
- Srs Control Module
- Srs Wiring
- Clock Spring
B0002 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.