B0064
Driver Seat Belt Tension Sensor
The SRS module has detected a fault in the driver seat belt tension sensor. This sensor measures belt load and is used by adaptive restraint systems to scale airbag deployment force based on occupant size.
- 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.
- Belt tension sensor failedCommon
- Wiring or connector faultPossible
Parts involved
- Seat Belt Tension Sensor
- Srs Control Module
- Srs Wiring
B0064 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.