B0052
Passenger Seat Belt Sensor
Fault on the passenger seat belt buckle/tongue sensor that detects whether the belt is fastened.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
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.
- Buckle sensor failedCommon
Parts involved
- Passenger Belt Buckle Sensor
- Sensor Wiring
B0052 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.