Code Definition

B0050 — Driver Seatbelt Pretensioner Deployment Circuit Open

System: Body  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About B0050

B0050 is a generic (obd-ii standard) body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0050 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

Because B0050 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The SRS/Airbag Control Module continuously monitors the driver seatbelt pretensioner deployment circuit for correct resistance and circuit integrity. DTC B0050 is set when the module detects an open circuit condition, typically identified by resistance above the calibrated threshold or loss of continuity, during system self-checks or continuous monitoring. This indicates the pretensioner may not deploy as commanded in the event of a collision, prompting SRS deactivation and warning lamp illumination.

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