B00B3Driver Seat Occupant Classification Sensor D
- Generic OBD-II code · Body
- How the car detects it
- B00B3 refers to the fourth of five driver seat classification inputs. No carmaker publishes it, and the mapping of letters to sensors is undocumented. A fourth input can rest on a different principle: Delphi patented a silicone-filled bladder between cushion foam and seat frame, carrying a pressure sensor and capacitive films whose spacing shrinks under load, so that weight and its spread over the cushion are estimated and cross-checked. Honda's job aid for its passenger seat weight sensors shows the service side: the sensors sit in the seat base or frame, need recalibration after a sensor or unit is replaced, and a binding sensor may be freed by loosening, shaking and retorquing the seat. Worn seat harnesses can also set such codes. A stored B00B3 lights the airbag lamp.
- What you may notice
- Airbag warning lamp on
- Classification of the driver unavailable for airbag staging
- Safety note: airbag system; unplug seat and sensor connectors only de-energised (ignition off, battery off, wait time); recalibrate after any sensor change, specialist workshop only
- Likely causes
- LikelySeat harness worn by seat movement, open or intermittent contact to input D
- PossibleSensor binding or preloaded in the seat structure
- PossibleRecalibration not done after sensor or unit replacement
- RareInternal fault of the sensor, e.g. leaking bladder or failed pressure cell
- 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.