Code Definition

B0113 (42) — RH side airbag squib Circuit shorted to power

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

About B0113

B0113 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 B0113 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 B0113 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

DTC B0113:42 is a Toyota body code that sets when the airbag sensor assembly, also called the SRS ECU, detects a short to power in the right hand (RH) side airbag squib circuit. The squib is the electrically fired igniter in the RH side or curtain airbag, and the SRS ECU monitors the firing loop for correct resistance and for any unintended connection to battery voltage. The Toyota sub code 42 identifies the fault as a short to power, meaning one of the squib conductors is picking up voltage from another circuit, commonly through a chafed harness, contamination in a connector, or wiring damage...

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