OBD Guide
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B181C

Short to Ground in Passenger Side Airbag Variable Vent Hole Squib Circuit

B181C is an OBD-II diagnostic trouble code meaning: Short to Ground 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
  • Restraint system malfunction

Causes

  • Wiring harness damage
  • Squib malfunction
  • Short circuit to ground
  • Problems with the SRS control unit

How to Fix

  1. Check wiring harness for damage
  2. Check squib resistance
  3. Check the circuit for short circuit to ground
  4. Replace faulty components
  5. Reset the error using an OBD-II scanner

Related codes

B181DB181EB181F

FAQ

What does the B181C code mean?

B181C is an OBD-II diagnostic trouble code that indicates: Short to Ground in Passenger Side Airbag Variable Vent Hole Squib Circuit

What causes a B181C error code?

The most common causes of B181C include: Wiring harness damage; Squib malfunction; Short circuit to ground; Problems with the SRS control unit.

How do I fix a B181C diagnostic trouble code?

To fix B181C: Check wiring harness for damage. Check squib resistance. Check the circuit for short circuit to ground. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B181C?

Do not drive — repair immediately

How much does it cost to fix B181C?

The estimated repair cost for B181C is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat