Code Definition

B0001 (55) — RHF Airbag squib - structural malfunction detected

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

About B0001

B0001 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.

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 B0001 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 Restraints Control Module (RCM) continuously monitors each airbag squib, the small pyrotechnic initiator that ignites the inflator charge during deployment. DTC B0001 sub code 55 sets when the RCM detects a structural malfunction in the right hand front (RHF) airbag squib circuit, meaning the measured electrical characteristics of the squib element fall outside the expected window in a way that points to physical damage or degradation rather than a straightforward open or short. Typical triggers include resistance or impedance drift, connector contamination, a damaged squib element, or har...

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