OBD Guide
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B1159

Front Airbag Sensor LH Malfunction

B1159 is an OBD-II diagnostic trouble code meaning: Front Airbag Sensor LH Malfunction. Common causes: sensor damage, open or short circuit in wiring harness. 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 does not work during testing
  • Error B1159 is stored in the ECU memory

Causes

  • Sensor damage
  • Open or short circuit in wiring harness
  • Contact corrosion
  • Restraint ECU malfunction

How to Fix

  1. Check the integrity of the sensor and its fastening
  2. Check wiring harness for open or short circuit
  3. Clean contacts from corrosion
  4. Replace sensor if necessary
  5. Reset the error and check the system

Related codes

B1158B1160B1000

FAQ

What does the B1159 code mean?

B1159 is an OBD-II diagnostic trouble code that indicates: Front Airbag Sensor LH Malfunction

What causes a B1159 error code?

The most common causes of B1159 include: Sensor damage; Open or short circuit in wiring harness; Contact corrosion; Restraint ECU malfunction.

How do I fix a B1159 diagnostic trouble code?

To fix B1159: Check the integrity of the sensor and its fastening. Check wiring harness for open or short circuit. Clean contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1159?

Do not drive — repair immediately

How much does it cost to fix B1159?

The estimated repair cost for B1159 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat