Airbags

B00CA — Passenger Seat Occupant Position Sensor D Fault (Subfault)

Severity: medium Safe to drive

What B00CA means

The airbag (SRS) control module found a problem in the circuit or signal of passenger seat occupant position sensor D. These sensors help the system tell whether the seat holds an adult, a child, a child seat or nobody. The module uses that to decide whether and how forcefully to deploy the passenger airbag.

Symptoms

  • Airbag (SRS) warning light is on
  • Passenger airbag on/off indicator behaves incorrectly
  • Airbag status does not match who is actually sitting there
  • Light may come and go, for example on rough roads

Possible causes

  1. Faulty occupant position sensor D
  2. Open or shorted sensor wiring
  3. Corroded or loose connector under the seat
  4. Wiring damaged by seat removal or objects under the seat
  5. Faulty SRS control module (uncommon)

How to diagnose

  1. Scan all SRS codes and note the freeze-frame data
  2. Check for objects under the seat or anything blocking seat movement
  3. Inspect the harness and connector under the seat for looseness, corrosion and chafed wires
  4. Disconnect the battery and wait the time the manufacturer specifies, then reseat the connectors
  5. Test sensor resistance and signal per the wiring diagram for your model
  6. Check wiring continuity to the SRS module
  7. Clear the code and see if it returns
  8. If the circuits are good, evaluate the SRS module

Common fixes

  • Clean and securely reseat the sensor connectors
  • Repair the damaged wiring to sensor D
  • Replace the sensor or the seat assembly that contains it
  • Replace or reprogram the SRS module if it is confirmed faulty

Questions and answers

What does B00CA mean?

It is a fault in passenger seat occupant position sensor D. The classification system is not getting a valid signal and may misjudge who is sitting there.

Can I drive with B00CA?

Yes, the car will drive normally. But the passenger airbag may deploy incorrectly or not at all, so get it fixed soon.

Can I fix B00CA myself?

You can check the connectors under the seat and remove any objects. Airbag work needs care: disconnect the battery first and follow the manufacturer's procedure.

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.