OBD Guide
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B1157

Front Airbag Sensor RH Malfunction

B1157 is an OBD-II diagnostic trouble code meaning: Front Airbag Sensor RH Malfunction. Common causes: damage to the right airbag sensor, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • SRS does not activate during testing
  • Error B1157 persists after scanning

Causes

  • Damage to the right airbag sensor
  • Open or short circuit in wiring harness
  • Sensor contact corrosion
  • SRS control module malfunction

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Check the integrity of the wiring harness and sensor contacts
  3. Replace the faulty sensor if necessary
  4. Reset the error and check the system operation

Related codes

B1156B1158B1160

FAQ

What does the B1157 code mean?

B1157 is an OBD-II diagnostic trouble code that indicates: Front Airbag Sensor RH Malfunction

What causes a B1157 error code?

The most common causes of B1157 include: Damage to the right airbag sensor; Open or short circuit in wiring harness; Sensor contact corrosion; SRS control module malfunction.

How do I fix a B1157 diagnostic trouble code?

To fix B1157: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness and sensor contacts. Replace the faulty sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1157?

Limited driving only, diagnose soon

How much does it cost to fix B1157?

The estimated repair cost for B1157 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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