Damaged or disconnected wiring in the driver's airbag squib circuit, often at the clockspring; Faulty clockspring (spiral cable) that has worn through from repeated steering wheel rotation; Poor electrical connection at the airbag module or under-seat connectors; Failed driver's airbag module (the inflator assembly itself); Corrosion or water intrusion in the airbag wiring harness or connectors; Internal fault in the airbag control module (less common)

DTC codes / B00xx · Airbags, seats, doors, lights and comfort systems / B0002

B0002Driver Frontal Stage 2 Deployment Control

Q: What does code B0002 mean?

Driver Frontal Stage 2 Deployment Control. B0002 indicates that the airbag control module has detected a fault in the deployment circuit for the second stage of the driver's frontal airbag, which is the higher-power charge used in more severe crashes. The module monitors circuit resistance and continuity and sets this code when the readings fall outside the expected range, disabling that stage to prevent an accidental deployment.

B0002 indicates that the airbag control module has detected a fault in the deployment circuit for the second stage of the driver's frontal airbag, which is the higher-power charge used in more severe crashes. The module monitors circuit resistance and continuity and sets this code when the readings fall outside the expected range, disabling that stage to prevent an accidental deployment.

SystemBody

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaAirbags, seats, doors, lights and comfort systems

Symptoms you may notice

Airbag warning light illuminated on the instrument cluster
SRS (Supplemental Restraint System) warning message displayed on the driver information center
Often no symptoms besides the warning light, with the vehicle driving normally
The airbag system may be disabled, so the driver's frontal airbag may not deploy in a crash
In some vehicles, other safety systems such as seatbelt pretensioners may be affected

Common causes, most likely first

Damaged or disconnected wiring in the driver's airbag squib circuit, often at the clockspring
Faulty clockspring (spiral cable) that has worn through from repeated steering wheel rotation
Poor electrical connection at the airbag module or under-seat connectors
Failed driver's airbag module (the inflator assembly itself)
Corrosion or water intrusion in the airbag wiring harness or connectors
Internal fault in the airbag control module (less common)

How to diagnose and fix it

Connect a scan tool and record all SRS codes and freeze-frame data before clearing anything
Inspect the driver's airbag wiring and connectors for damage, corrosion, or loose pins
Check the clockspring continuity and resistance with a multimeter, following the manufacturer's procedure
Perform a resistance test on the stage 2 deployment circuit to compare against specifications
If the circuit tests good, substitute a known-good airbag module or use a simulator to isolate the fault
Repair or replace the faulty clockspring, wiring, or airbag module as needed
Clear the codes and verify the airbag light goes out and stays off after a test drive

Don't overlook the clockspring or wiring

The clockspring is the most common failure point for driver airbag codes because it flexes every time the steering wheel turns and eventually breaks internally.
A code B0002 does not always mean the airbag itself is bad; circuit resistance problems often trace back to connectors or wiring rather than the inflator.
Some vehicles require the battery to be disconnected and a waiting period before working on airbag circuits to prevent accidental deployment.
After any repair, the airbag module may need to be reset or reprogrammed with a scan tool before the light will clear.
Related codes such as B0001 (stage 1) or B0012 (passenger airbag) may also be present if the fault is in shared wiring or the control module.

Can I keep driving with B0002?

Because this code can disable the driver's frontal airbag, the vehicle should not be driven until the fault is repaired. If you must move the car, drive directly to a repair facility and avoid any situation where a crash is likely.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.