Airbags

B00B8 — Driver Seat Occupant Position Sensor B Fault

Severity: medium Drive with care, to a shop

What B00B8 means

The airbag (SRS) control module constantly monitors sensors in the driver seat that help determine the occupant's position. It uses that information to decide how to deploy restraints in a crash. B00B8 means the signal from sensor B is missing, out of range, or implausible.

Symptoms

  • Airbag or SRS warning light is on
  • Scan tool shows B00B8 in the SRS module
  • Occupant-dependent restraint functions may be disabled
  • Airbag status indicator may behave erratically

Possible causes

  1. Failed driver seat occupant position sensor B
  2. Open or shorted wiring to the sensor
  3. Corroded or loose connector under the seat
  4. Wiring damaged by seat movement or items stored under the seat
  5. Faulty airbag control module (less likely)

How to diagnose

  1. Read all SRS codes and freeze-frame data, clear the code, and see whether it returns
  2. Inspect the harness and connectors under the driver seat for chafing, moisture, or corrosion
  3. Check that the harness isn't pinched or stretched when the seat moves on its rails
  4. Disconnect the battery and wait the manufacturer's specified time before unplugging any SRS connector
  5. Test sensor resistance and circuit continuity to the SRS module using the vehicle wiring diagram
  6. Verify power and ground at the sensor circuit
  7. If the sensor and wiring are good, test the SRS module and check for software updates

Common fixes

  • Replace driver seat occupant position sensor B
  • Repair or replace the damaged harness or connector
  • Reprogram or replace the SRS control module if confirmed faulty
  • Clear codes after repair and confirm the SRS light stays off

Questions and answers

What does B00B8 mean?

The airbag module found a fault with driver seat occupant position sensor B. The system may then misjudge how the driver is seated.

Is it safe to drive with B00B8?

The engine and transmission are fine, so you can drive. But the driver airbag may not work correctly in a crash, so have it diagnosed soon.

Can I just clear B00B8?

You can, but it will return if the cause remains. Start by checking the connectors and wiring under the seat.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.