OBD Guide
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B1B03

Driver Airbag Squib 1 Circuit Shorted Together

B1B03 is an OBD-II diagnostic trouble code meaning: Driver Airbag Squib 1 Circuit Shorted Together. Common causes: wiring harness damage, airbag squib malfunction. Estimated repair cost: $56–222.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Airbag light is on
  • The passive safety system can be disabled
  • Possible errors in other airbag circuits

Causes

  • Wiring harness damage
  • Airbag squib malfunction
  • Short circuit in the airbag control module
  • Corrosion or oxidation of contacts

How to Fix

  1. Conduct a visual inspection of the wiring harness and contacts
  2. Check the resistance of the airbag squib
  3. Check continuity with a multimeter
  4. Replace damaged components (wiring harness, squib or control module)
  5. Reset the error and check the system

Related codes

B1B04B1B02B1B01

FAQ

What does the B1B03 code mean?

B1B03 is an OBD-II diagnostic trouble code that indicates: Driver Airbag Squib 1 Circuit Shorted Together

What causes a B1B03 error code?

The most common causes of B1B03 include: Wiring harness damage; Airbag squib malfunction; Short circuit in the airbag control module; Corrosion or oxidation of contacts.

How do I fix a B1B03 diagnostic trouble code?

To fix B1B03: Conduct a visual inspection of the wiring harness and contacts. Check the resistance of the airbag squib. Check continuity with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1B03?

Do not drive — repair immediately

How much does it cost to fix B1B03?

The estimated repair cost for B1B03 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat