Body, generic

B00B3 Driver Seat Occupant Classification Sensor D

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Seat harness worn by seat movement, open or intermittent contact to input D
Sensor binding or preloaded in the seat structure
Recalibration not done after sensor or unit replacement
Internal fault of the sensor, e.g. leaking bladder or failed pressure cell

Symptoms

  • 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

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver classification sensor dsrs seat wiringsrs control module

Related codes

B00B2B00B4B00B1B00B0B00A0

References: patents.google.com, rts.i-car.com, law.cornell.edu.