OBD Guide

B00B4

Driver Seat Occupant Classification Sensor E

B00B4 is an OBD-II diagnostic trouble code meaning: Driver Seat Occupant Classification Sensor E. Common causes: open or shorted wiring harness, malfunction of the driver's weight classification sensor (stage e). Estimated repair cost: $56–167.

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 may not work correctly
  • Lack of airbag response in an emergency situation

Causes

  • Open or shorted wiring harness
  • Malfunction of the driver's weight classification sensor (stage E)
  • Problems with contacts in connectors
  • Airbag module malfunction

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check the contacts in the connectors for oxidation
  3. Test the sensor resistance (compare with reference values)
  4. Replace sensor if necessary
  5. Reset the error with an OBD-II scanner

Related codes

Error B00B4 by Vehicle Brand

FAQ

What does the B00B4 code mean?

B00B4 is an OBD-II diagnostic trouble code that indicates: Driver Seat Occupant Classification Sensor E

What causes a B00B4 error code?

The most common causes of B00B4 include: Open or shorted wiring harness; Malfunction of the driver's weight classification sensor (stage E); Problems with contacts in connectors; Airbag module malfunction.

How do I fix a B00B4 diagnostic trouble code?

To fix B00B4: Check the integrity of the sensor wiring harness. Check the contacts in the connectors for oxidation. Test the sensor resistance (compare with reference values). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B00B4?

Do not drive — repair immediately

How much does it cost to fix B00B4?

The estimated repair cost for B00B4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat