B0003: Driver Frontal Stage 3 Deployment Control
The airbag module has detected a fault in the driver front airbag stage 3 circuit.
High risk
Have it checked promptly. The driver airbag may not deploy correctly.
Short answer · Can I keep driving with B0003?
The car drives normally, but the driver airbag may not deploy correctly. Have it checked as soon as possible.
What does B0003 mean?
B0003 concerns the driver front airbag stage 3. The airbag module tests this circuit every time the car starts and stores the code when the resistance is out of range. Connectors, wiring and previous repairs are common causes.
What the car does when the code is set
The airbag warning light comes on. The affected airbag may not deploy in a crash.
How the system works
Each airbag has an igniter (squib) circuit. The airbag control module constantly checks the resistance of these circuits and stores a code when it is out of range, because the airbag might not deploy correctly.
Common symptoms
Possible causes
Listed without ranking. The cause on your car depends on make, engine and mileage — see the maker notes below.
- Connector or clock spring faultFor driver airbag codes, the rotating clock spring behind the steering wheel is a common cause.
- Seat wiring connectorsSide airbag connectors under the seats can loosen when seats are moved.
- Damaged wiringWires pinched by seat rails or trim.
- Faulty airbag module (inflator) circuitResistance outside the expected range.
- Previous repairsDisturbed connectors after interior work.
How it is diagnosed
- Treat the airbag light seriouslyThe affected airbag may not deploy in a crash.
- Do not disturb airbag parts yourselfAirbag diagnosis and repair should be left to trained technicians.Never probe airbag connectors or measure resistance across an airbag. Accidental deployment can cause serious injury.
- Tell the workshop about recent workSeat removal, steering wheel work or a collision helps narrow the cause.
Questions about B0003
Can an airbag code clear itself?
Some codes become stored after the fault disappears, but the warning light usually stays on until the code is cleared with a scan tool after the repair.
Can I clear an airbag code myself?
The light may come back if the fault is still there. The system needs proper diagnosis.