What does code B0073 mean?

Q: What does code B0073 mean?

Driver Seatbelt Pretensioner Loop Short to Ground. B0073 means the restraint control module has detected a short to ground on the driver seatbelt pretensioner circuit, which is the pyrotechnic device that tightens the belt during a crash. The module monitors the loop resistance and sees it pulled to chassis ground instead of the expected value, so it disables that pretensioner and turns on the airbag warning light.

DTC codes / B00xx · Airbags, seats, doors, lights and comfort systems / B0073

B0073Driver Seatbelt Pretensioner Loop Short to Ground

B0073 means the restraint control module has detected a short to ground on the driver seatbelt pretensioner circuit, which is the pyrotechnic device that tightens the belt during a crash. The module monitors the loop resistance and sees it pulled to chassis ground instead of the expected value, so it disables that pretensioner and turns on the airbag warning light.

SystemBody

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaAirbags, seats, doors, lights and comfort systems

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.