Code Definition

B0115 (47) — LH side airbag squib Circuit shorted

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

About B0115

B0115 is a generic (obd-ii standard) body diagnostic trouble code recorded for Toyota vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B0115 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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 B0115 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 airbag control module, known on Toyota as the Center Airbag Sensor Assembly or SRS ECU, continuously monitors the left hand side airbag squib circuit for correct resistance and bias voltage. DTC B0115 sub code 47 sets when the module detects a shorted condition in that firing circuit, either the two squib wires shorted together, a squib wire shorted to chassis ground, or a squib wire shorted to a power feed. The side airbag squib is the small resistive igniter inside the seat mounted or curtain airbag module that the SRS ECU fires with a precise current pulse during a side impact event. Wh...

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