OBD Guide
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B1B72

Left Side Satellite Acceleration Sensor 1 Internal

B1B72 is an OBD-II diagnostic trouble code meaning: Left Side Satellite Acceleration Sensor 1 Internal. Common causes: acceleration sensor malfunction, wiring harness damage. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Restraint indicator light is on
  • Incorrect operation of side airbags or curtains
  • The error is stored in the ECU memory

Causes

  • Acceleration sensor malfunction
  • Wiring harness damage
  • Problems with the restraint control module
  • Short circuit or open circuit

How to Fix

  1. Checking the acceleration sensor for damage
  2. Diagnostics of wiring harness and contacts
  3. Replace the sensor if necessary
  4. Error reset and system check

Related codes

B1B71B1B73B1B74

FAQ

What does the B1B72 code mean?

B1B72 is an OBD-II diagnostic trouble code that indicates: Left Side Satellite Acceleration Sensor 1 Internal

What causes a B1B72 error code?

The most common causes of B1B72 include: Acceleration sensor malfunction; Wiring harness damage; Problems with the restraint control module; Short circuit or open circuit.

How do I fix a B1B72 diagnostic trouble code?

To fix B1B72: Checking the acceleration sensor for damage. Diagnostics of wiring harness and contacts. Replace the sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1B72?

Do not drive — repair immediately

How much does it cost to fix B1B72?

The estimated repair cost for B1B72 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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