B1181 on Toyota
Driver Airbag (2nd Stage) Squib Circuit Open
B1181 on Toyota vehicles indicates driver airbag (2nd stage) squib circuit open. Au7o has documented this code across 1 Toyota model — most commonly on Tacoma. B1181 is a manufacturer-specific body/restraint code that, on many Toyota/Lexus and other Asian-make vehicles, indicates an open circuit in the driver airbag module's squib (often the second-stage inflator firing loop); on some GM applications it instead refers to an audio output circuit. In the SRS context, the airbag control module detected a break in the deployment circuit, which could prevent the airbag from firing in a crash, so the airbag light is on. Because meaning varies by maker, confirm with vehicle-specific data. Typical repair costs on Toyota range from $250 to $700, depending on the specific model and root cause.
Common Causes of B1181
- •Faulty driver airbag inflator/squib
- •Damaged or worn clockspring (spiral cable) in the steering column
- •Open or high-resistance wiring in the squib circuit
- •Corroded or disconnected airbag connector
- •Faulty airbag (SRS) control module
- •Improper airbag/connector reassembly after service
B1181 on Toyota by Model
Toyota Tacoma(1 issue)
- Spiral Cable / Clock Spring Failure Triggering Airbag Light and Inoperative Steering Wheel Controls2005-2015
Second-generation Tacomas commonly develop failure of the steering wheel spiral cable, also called the clock spring. Owners report the airbag warning light turning on along with loss of horn, cruise control, or steering wheel audio controls because the ribbon cable inside the assembly breaks with repeated wheel rotation. Toyota issued service information and the problem is widely documented in owner forums and complaint databases.
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View B1181 across all makes →Frequently Asked Questions
What does B1181 mean on Toyota?▼
B1181 stands for "Driver Airbag (2nd Stage) Squib Circuit Open." B1181 is a manufacturer-specific body/restraint code that, on many Toyota/Lexus and other Asian-make vehicles, indicates an open circuit in the driver airbag module's squib (often the second-stage inflator firing loop); on some GM applications it instead refers to an audio output circuit. In the SRS context, the airbag control module detected a break in the deployment circuit, which could prevent the airbag from firing in a crash, so the airbag light is on. Because meaning varies by maker, confirm with vehicle-specific data. On Toyota specifically, this code is documented across 1 model.
What causes B1181 on Toyota vehicles?▼
Common causes on Toyota: Faulty driver airbag inflator/squib, Damaged or worn clockspring (spiral cable) in the steering column, Open or high-resistance wiring in the squib circuit, Corroded or disconnected airbag connector, Faulty airbag (SRS) control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1181 on a Toyota?▼
Repair costs on Toyota range from $250 to $700, depending on the specific model and root cause.
Which Toyota models have B1181 documented?▼
Au7o has documented B1181 on 1 Toyota model: Tacoma.