B0056
Right Curtain Deployment Loop Open
The right curtain airbag deployment circuit shows an open condition; the curtain on the passenger side cannot deploy.
- 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.
- Broken roof wiringCommon
- Unseated curtain connectorPossible
Parts involved
- Right Curtain Airbag
- Srs Roof Wiring
B0056 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.