OBD Guide
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B1B19

Left Side Curtain Squib 1 Circuit High

B1B19 is an OBD-II diagnostic trouble code meaning: Left Side Curtain Squib 1 Circuit High. Common causes: broken or damaged wiring harness, oxidation of contacts in connectors. 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
  • Restraint system error message on the dashboard

Causes

  • Broken or damaged wiring harness
  • Oxidation of contacts in connectors
  • Curtain air squib malfunction
  • Problems with the airbag control module

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness and contacts
  3. Replace the squib if necessary
  4. Clean or replace connectors
  5. Reset the error and check the system

Related codes

B1B18B1B1AB1B1B

FAQ

What does the B1B19 code mean?

B1B19 is an OBD-II diagnostic trouble code that indicates: Left Side Curtain Squib 1 Circuit High

What causes a B1B19 error code?

The most common causes of B1B19 include: Broken or damaged wiring harness; Oxidation of contacts in connectors; Curtain air squib malfunction; Problems with the airbag control module.

How do I fix a B1B19 diagnostic trouble code?

To fix B1B19: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness and contacts. Replace the squib if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1B19?

Do not drive — repair immediately

How much does it cost to fix B1B19?

The estimated repair cost for B1B19 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat