OBD Guide

B00B1

Driver Seat Occupant Classification Sensor B

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

Symptoms

  • Airbag light is on
  • The passive safety system can disable the driver's airbag
  • Error message on the dashboard

Causes

  • Open or short circuit in the sensor wiring harness
  • Malfunction of the weight classification sensor itself
  • Problems with the sensor connector
  • Malfunction of the airbag control unit

How to Fix

  1. Check the sensor wiring harness for damage.
  2. Check sensor connectors for oxidation and corrosion
  3. Check the sensor resistance (compare with reference values)
  4. If necessary, replace the weight classification sensor
  5. Reset the error and check the system operation

Related codes

Error B00B1 by Vehicle Brand