Airbags

B00C5 — Passenger Seat Track Position Sensor Fault (Subfault)

Severity: medium Safe to drive

What B00C5 means

The restraint (SRS) control module reads a sensor that reports how far forward or back the passenger seat is on its track. This helps it decide how to deploy the airbag and seat belt pretensioners. B00C5 is set when the sensor signal or its circuit falls outside the expected range.

Symptoms

  • Airbag (SRS) warning light on
  • B00C5 stored in the restraint module
  • Possible passenger occupant system fault message
  • Warning may change after moving the seat

Possible causes

  1. Faulty passenger seat track position sensor
  2. Open or shorted wiring to the sensor
  3. Poor contact or corrosion at the connector under the seat
  4. Wiring pinched or damaged by seat movement or cleaning
  5. Faulty restraint control module (rare)

How to diagnose

  1. Scan all modules with an SRS-capable tool and note any related codes
  2. Inspect the harness and connector under the passenger seat for pinching, damage or corrosion
  3. Slide the seat through its full travel and watch for the signal dropping out
  4. Disconnect the battery and wait the specified time for SRS capacitors to discharge before unplugging the sensor
  5. Test the wiring for continuity and for shorts to ground or power between the sensor and the module
  6. Check the sensor against the manufacturer's specs and in live data
  7. Clear the code and confirm it does not return

Common fixes

  • Repair or replace damaged wiring and the connector
  • Clean the terminals or replace the connector pin
  • Replace the seat track position sensor
  • Replace or reprogram the restraint control module if confirmed faulty

Questions and answers

What does B00C5 mean?

It is a fault in the passenger seat track position sensor circuit of the SRS. The signal is outside the expected range because of the sensor, wiring or connector.

Can I drive with B00C5?

Yes, the car will drive normally. The passenger airbag may not deploy correctly, so have it diagnosed soon.

Can I fix B00C5 myself?

You can inspect the connector and harness under the seat. SRS work requires disconnecting the battery and care, so see a shop if you are unsure.

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.