Body, generic

B00C8 Passenger Seat Occupant Position Sensor B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B00C8 marks the second occupant position sensor of the passenger seat. No carmaker publishes it. A position input does not have to look at the person; it can come from how the load spreads over the seat. In a Honda application filed in 2002, a weight unit under each side of the seat carries four strain gauges in a bridge; comparing the front and rear gauge pairs shows whether the occupant sits on the front edge, and comparing the two sides shows a lean to left or right. FMVSS 208 accepts dynamic suppression for the passenger: the bag must already be suppressed when a 3- or 6-year-old dummy moves its head, neck or torso into a zone in front of the cover, a zone each maker defines for itself. Whether B means such a load-based signal is not documented. B00C8 brings on the airbag lamp.

Likely causes

Plug or lead to sensor B damaged when the seat was moved or removed
Strain gauge bridge or position sensor B faulty, drifting with temperature
Seat frame mounted under tension, so the load split looks implausible

Symptoms

  • Airbag warning lamp on
  • Passenger airbag may be suppressed or released without regard to sitting position
  • Safety note: airbag system; disconnect seat sensors only de-energised (ignition off, battery off, wait time), recalibrate after work on the seat, specialist workshop only

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–900
Time0.5–3 h

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

Parts involved

passenger occupant position sensor bsrs seat wiringoccupant position module

Related codes

B00C7B00C9B00A1B00B8

References: patents.google.com, law.cornell.edu.