OBD Guide
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B1149

Front Airbag Sensor LH Circuit Malfunction

B1149 is an OBD-II diagnostic trouble code meaning: Front Airbag Sensor LH Circuit Malfunction. Common causes: open or shorted wiring harness, oxidation of sensor contacts. 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
  • The passive safety system may not work in an accident.

Causes

  • Open or shorted wiring harness
  • Oxidation of sensor contacts
  • Airbag sensor malfunction
  • Damage to the sensor connector

How to Fix

  1. Check the wiring harness for opens and shorts
  2. Clean the contacts of the sensor and connector
  3. Check sensor resistance
  4. Replace sensor if necessary
  5. Reset the error and check the system

Related codes

B1148B1150B1151

FAQ

What does the B1149 code mean?

B1149 is an OBD-II diagnostic trouble code that indicates: Front Airbag Sensor LH Circuit Malfunction

What causes a B1149 error code?

The most common causes of B1149 include: Open or shorted wiring harness; Oxidation of sensor contacts; Airbag sensor malfunction; Damage to the sensor connector.

How do I fix a B1149 diagnostic trouble code?

To fix B1149: Check the wiring harness for opens and shorts. Clean the contacts of the sensor and connector. Check sensor resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1149?

Do not drive — repair immediately

How much does it cost to fix B1149?

The estimated repair cost for B1149 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat