B0013
Passenger Knee Bolster Deployment Control
Fault on the deployment control circuit of the passenger knee airbag (knee bolster). Restricts lower-body motion of the passenger in a frontal collision.
- Check engine light: Yes
- 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.
- Squib (igniter) circuit openCommon
- Airbag connector corroded under seatPossible
Parts involved
- Knee Airbag Passenger
- Squib Circuit
B0013 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.