◆OBD Codes

B0003

Driver Frontal Airbag Deployment Loop Circuit Short to Battery

Criticalelectrical

Overview

The B0003 code indicates that the body control module has detected a driver frontal airbag deployment loop circuit short to battery 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

  • Windshield wipers not operating or stuck
  • Turn signals flashing rapidly or not at all
  • Seatbelt warning chime not functioning
  • Keyless entry or push-button start not working

Common Causes

  • Poor ground connection
  • Faulty SRS/airbag control module
  • Damaged clock spring in steering column
  • Corroded or damaged wiring harness connectors

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

BMW 3 SeriesNissan AltimaMazda CX-5Jeep Grand Cherokee

Related Codes

B0183B0047B0157

More Electrical Codes

B0001Driver Frontal Airbag Deployment Loop Circuit Open
Critical
B0002Driver Frontal Airbag Deployment Loop Circuit Short to Ground
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.