B142A on Ford
Restraint System Ignition Voltage Supply Fault
B142A on Ford vehicles indicates restraint system ignition voltage supply fault. Au7o has documented this code across 1 Ford model — most commonly on Bronco. B142A is a manufacturer-specific body/restraint code that, on several applications (e.g., Nissan), indicates a problem with the ignition/voltage supply to the airbag diagnosis (SRS) sensor unit, meaning the supply voltage is out of the expected range. The restraint module needs stable voltage to function, so this can illuminate the airbag warning light and compromise SRS readiness. Because it involves the safety-restraint system, it should be diagnosed promptly. Exact meaning varies by maker, so confirm with vehicle-specific data.
Common Causes of B142A
- •Faulty ignition switch or ignition-supply circuit
- •Damaged or corroded wiring to the SRS/airbag module
- •Loose or corroded connector at the restraint module
- •Weak battery or low charging-system voltage
- •Faulty airbag (SRS) diagnosis sensor unit
- •Blown fuse or poor ground in the supply circuit
B142A on Ford by Model
Ford Bronco(1 issue)
- Front Seat Belt Pretensioner Non-Deployment Recall Issue2021-2023
A documented Bronco safety issue involved front seat belt pretensioners that may not deploy properly in a crash. This defect increases injury risk because the restraint system may not tighten the belt as intended during impact. The issue is recall-documented and has been discussed by owners receiving recall notices and dealer repairs.
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View B142A across all makes →Frequently Asked Questions
What does B142A mean on Ford?▼
B142A stands for "Restraint System Ignition Voltage Supply Fault." B142A is a manufacturer-specific body/restraint code that, on several applications (e.g., Nissan), indicates a problem with the ignition/voltage supply to the airbag diagnosis (SRS) sensor unit, meaning the supply voltage is out of the expected range. The restraint module needs stable voltage to function, so this can illuminate the airbag warning light and compromise SRS readiness. Because it involves the safety-restraint system, it should be diagnosed promptly. Exact meaning varies by maker, so confirm with vehicle-specific data. On Ford specifically, this code is documented across 1 model.
What causes B142A on Ford vehicles?▼
Common causes on Ford: Faulty ignition switch or ignition-supply circuit, Damaged or corroded wiring to the SRS/airbag module, Loose or corroded connector at the restraint module, Weak battery or low charging-system voltage, Faulty airbag (SRS) diagnosis sensor unit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B142A on a Ford?▼
Repair costs vary widely depending on the root cause and specific Ford model.
Which Ford models have B142A documented?▼
Au7o has documented B142A on 1 Ford model: Bronco.