B00B0Driver Seat Occupant Classification Sensor A
- Generic OBD-II code · Body
- How the car detects it
- B00B0 is the first of five classification inputs on the driver seat. No carmaker publishes this code, and J2012 leaves it to the maker which sensor the letter A means. Classification normally sits in the passenger seat; a Bosch patent notes that it can be omitted on the driver side, on the assumption that drivers are adults, or fitted there as well. One sensor type that could fill such a slot is a switch mat under the cushion: Autoliv patented a mat with 28 dome switches grouped in five zones, chosen from a 2,016-cell test mat loaded with FMVSS 208 dummies and child seats at several back angles. If B00B0 is stored, the restraint module no longer trusts that input, so adaptive driver airbag staging may be lost, and the airbag lamp is on.
- What you may notice
- Airbag warning lamp on
- Driver airbag may deploy with a fixed instead of an adapted stage
- Safety note: airbag system; unplug seat and sensor connectors only de-energised (ignition off, battery off, wait time); calibrate the sensor after replacement, specialist workshop only
- Likely causes
- LikelyOpen or poor contact in the driver seat harness or plug to input A
- PossibleCushion sensor mat creased or damaged, e.g. after seat cover work
- RareSensor or seat replaced without the required zero-point calibration
- 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.