B00B9Driver Seat Occupant Position Sensor C
- Generic OBD-II code · Body
- How the car detects it
- B00B9 is the third occupant position sensor of the driver seat. No carmaker publishes it. A third input could judge posture from the seat back: a patent now held by Joyson places two electric field electrodes under the seat-back cover, one across the upper middle and inboard side and one along the outboard edge, and combines them with seat weight to block the side airbag when a small occupant leans into its path. Honda applied the same idea on the passenger side with OPDS sensors in the seat-back, which must be initialised after the cover or sensor is replaced and can be upset by a damp seat. Whether a driver seat uses the letter C for such an electrode is not documented. A stored B00B9 brings on the airbag lamp.
- What you may notice
- Airbag warning lamp on
- Side airbag suppression for leaning occupants unavailable
- Safety note: airbag system with seat side airbag; disconnect seat plugs only de-energised; initialise/calibrate after sensor or cover replacement, specialist workshop only
- Likely causes
- LikelySeat-back cover or sensor replaced without initialisation
- PossibleDamaged seat-back harness or plug under the seat
- PossibleDamp seat or accessory seat cover disturbing the electric field
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.