Airbags

B00C6 — Passenger Seat Recline Position Sensor Fault

Severity: medium Safe to drive

What B00C6 means

The restraint control module (SRS) is getting an invalid signal, or none at all, from the passenger seat recline position sensor. This sensor tells the module how far the seatback is tilted so it can time the airbag and seat belt pretensioner deployment correctly. When the signal is wrong, the module stores the code and turns on the warning light.

Symptoms

  • Airbag (SRS) warning light on the dash
  • Occupant restraint system warning message
  • Passenger airbag off indicator may come on or flash
  • Code returns after being cleared

Possible causes

  1. Failed passenger seat recline position sensor
  2. Open or shorted wiring in the sensor harness
  3. Corroded or loose connector under the seat
  4. Wiring damaged while adjusting or removing the seat
  5. Faulty airbag control module (uncommon)

How to diagnose

  1. Scan all modules with an SRS-capable tool and review freeze frame data
  2. Inspect the connector and harness under the passenger seat for pinches, chafing, corrosion and loose pins
  3. Make sure nothing is jamming the seat recline mechanism or stuck under the seat
  4. Watch live data to see whether the sensor reading changes as the seatback is moved
  5. Test the sensor circuit for continuity, shorts to ground and correct reference voltage per the wiring diagram
  6. Check for other SRS codes that point to a wider circuit problem
  7. Clear the code and see if it returns after adjusting the seat and a test drive

Common fixes

  • Clean and reseat the connector, repairing any loose terminals
  • Repair or replace the damaged section of harness
  • Replace the seat recline position sensor
  • Replace or reprogram the airbag control module if it is confirmed faulty

Questions and answers

Can I drive with B00C6?

Yes, the car will drive normally. But the passenger-side restraints may not work as designed in a crash, so have it repaired soon.

Why did the airbag light come on after I moved the seat?

Moving or adjusting the seat can unplug a connector or pinch the sensor wiring. Check the connector under the seat, then scan for codes.

Can I just clear B00C6?

You can clear it, but it will come back if the cause is still there. Find the sensor or wiring fault first.

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.