◆OBD Codes

B0002

Driver Frontal Airbag Deployment Loop Circuit Short to Ground

Criticalelectrical

Overview

The B0002 code indicates that the body control module has detected a driver frontal airbag deployment loop circuit short to ground condition. This relates to the vehicle's body electrical systems, which control comfort, convenience, and safety features. When this code is stored, the affected system or component may not operate correctly, potentially impacting safety or comfort features.

Symptoms

  • Power window inoperative on one or more doors
  • SRS indicator light stays on or flashes
  • Climate control not responding to inputs
  • Audio system not powering on

Common Causes

  • Faulty body control module (BCM)
  • Low battery voltage or failing alternator
  • Damaged clock spring in steering column
  • Poor ground connection

Diagnosis Steps

  1. 1Connect an OBD-II scanner and read all stored body control module trouble codes
  2. 2Inspect the affected circuit fuse and relay; replace if blown or faulty
  3. 3Check the wiring harness and connectors for damage, corrosion, or loose pins
  4. 4Test circuit voltage and ground with a multimeter at the affected component
  5. 5Verify battery voltage is within specification (12.4V+ engine off)

Estimated Repair Cost

$75 — $800

Cost varies by vehicle, location, and repair shop. Includes parts and labor.

Commonly Affected Vehicles

Nissan AltimaChevrolet SilveradoMazda CX-5Subaru Outback

Related Codes

B0183B0039B0047

More Electrical Codes

B0001Driver Frontal Airbag Deployment Loop Circuit Open
Critical
B0003Driver Frontal Airbag Deployment Loop Circuit Short to Battery
Critical
B0004Driver Frontal Airbag Deployment Loop Resistance Too High
Critical
B0005Driver Frontal Airbag Deployment Loop Resistance Too Low
Critical
B0006Passenger Frontal Airbag Deployment Loop Circuit Open
Critical
B0007Passenger Frontal Airbag Deployment Loop Circuit Short to Ground
Critical

Frequently Asked Questions

Driving with the airbag warning light on means the SRS system may not deploy in a crash, which significantly increases injury risk. Have the system inspected as soon as possible.