OBD Guide
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B1B11

Driver Knee Bolster Squib Circuit High

B1B11 is an OBD-II diagnostic trouble code meaning: Driver Knee Bolster Squib Circuit High. Common causes: break in the wiring harness, contact corrosion. Estimated repair cost: $111–333.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$111–333 (est.)

Symptoms

  • Airbag light is on
  • Error B1B11 in ECU memory

Causes

  • Break in the wiring harness
  • Contact corrosion
  • Faulty squib
  • Damage to the airbag control unit

How to Fix

  1. Check the integrity of the wiring harness
  2. Check squib resistance
  3. Replace squib or wiring harness if necessary
  4. Reset the error and check the system

Related codes

B1B12B1B13B1B14

FAQ

What does the B1B11 code mean?

B1B11 is an OBD-II diagnostic trouble code that indicates: Driver Knee Bolster Squib Circuit High

What causes a B1B11 error code?

The most common causes of B1B11 include: Break in the wiring harness; Contact corrosion; Faulty squib; Damage to the airbag control unit.

How do I fix a B1B11 diagnostic trouble code?

To fix B1B11: Check the integrity of the wiring harness. Check squib resistance. Replace squib or wiring harness if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1B11?

Do not drive — repair immediately

How much does it cost to fix B1B11?

The estimated repair cost for B1B11 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat