OBD Guide
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B181A

Short in Passenger Side Airbag Variable Vent Hole Squib Circuit

B181A is an OBD-II diagnostic trouble code meaning: Short in Passenger Side Airbag Variable Vent Hole Squib Circuit. Common causes: wiring harness damage, squib malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • Error message on the dashboard
  • Airbag does not activate during testing

Causes

  • Wiring harness damage
  • Squib malfunction
  • Short circuit in the airbag control module
  • Contact corrosion

How to Fix

  1. Check wiring harness for damage
  2. Check squib resistance
  3. Inspect contacts for corrosion
  4. Replace damaged components
  5. Reset the error and check the system

Related codes

B181BB181CB181D

FAQ

What does the B181A code mean?

B181A is an OBD-II diagnostic trouble code that indicates: Short in Passenger Side Airbag Variable Vent Hole Squib Circuit

What causes a B181A error code?

The most common causes of B181A include: Wiring harness damage; Squib malfunction; Short circuit in the airbag control module; Contact corrosion.

How do I fix a B181A diagnostic trouble code?

To fix B181A: Check wiring harness for damage. Check squib resistance. Inspect contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B181A?

Do not drive — repair immediately

How much does it cost to fix B181A?

The estimated repair cost for B181A is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat