Code B0003 indicates a malfunction in the deployment control circuit for the third stage of the driver-side frontal airbag. This typically signifies an electrical fault, such as high resistance or an open circuit, preventing the SRS module from properly triggering the airbag's third deployment stage.
Frayed, pinched, or corroded wiring between the SRS module and the driver airbag inflator.
Internal failure or broken ribbons within the steering wheel clock spring, interrupting the deployment signal.
Poor electrical contact at the airbag squib connector or the SRS module plug due to moisture or vibration.
An internal failure of the stage 3 deployment squib/igniter within the airbag module.
Internal circuit failure within the SRS module preventing the output signal for stage 3 deployment.
No. An active B0003 code indicates that the driver-side airbag may not deploy as intended during a collision, significantly increasing the risk of injury.
No. The module is rarely the cause of this code; wiring faults and clock spring failures are far more common and should be ruled out first.
No. Using a standard multimeter on an airbag squib can accidentally trigger deployment due to the small current sent by the meter; specialized SRS tools must be used.