OBD Guide
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B1066

Assist Air Bag Module Short

B1066 is an OBD-II diagnostic trouble code meaning: Assist Air Bag Module Short. Common causes: short circuit in wiring harness, oxidation of contacts. Estimated repair cost: $56–333.

Severity
🚨 Critical
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–333 (est.)

Symptoms

  • Airbag light is on
  • Lack of system response in case of accident
  • False airbag deployments

Causes

  • Short circuit in wiring harness
  • Oxidation of contacts
  • Damage to the airbag module
  • Squib malfunction

How to Fix

  1. Conduct a visual inspection of the wiring harness
  2. Check module circuit resistance
  3. Clean or replace oxidized contacts
  4. If necessary, replace the airbag module

Related codes

B1065B1067B1077

FAQ

What does the B1066 code mean?

B1066 is an OBD-II diagnostic trouble code that indicates: Assist Air Bag Module Short

What causes a B1066 error code?

The most common causes of B1066 include: Short circuit in wiring harness; Oxidation of contacts; Damage to the airbag module; Squib malfunction.

How do I fix a B1066 diagnostic trouble code?

To fix B1066: Conduct a visual inspection of the wiring harness. Check module circuit resistance. Clean or replace oxidized contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1066?

Limited driving only, diagnose soon

How much does it cost to fix B1066?

The estimated repair cost for B1066 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat