Body, generic

B00C7 Passenger Seat Occupant Position Sensor A

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B00C7 opens the row of five passenger seat position sensors, a code absent from all public carmaker documents. The passenger seat is where position sensing reached series cars: Honda's OPDS puts sensors in the passenger seat back that judge sitting height and whether a child leans toward the door, and then blocks the seat-mounted side airbag and lights a side airbag off indicator. Honda's 1998 patent describes the principle: band electrodes in the back cover are fed with a high-frequency signal, and a nearby body raises the current, so shoulders, head and a door-side lean can be told apart; the unit also diagnoses its own faults. Honda asks for the system to be initialised after seat-back parts are changed. Whether a maker maps such a sensor to A is not documented. B00C7 lights the airbag lamp.

Likely causes

Position system not initialised after seat cover, seat back sensor or control unit replacement
Electrode or lead in the seat back damaged, for instance by a non-original seat cover or repairs
Damp seat back or objects pressed against it

Symptoms

  • Airbag warning lamp on
  • Side airbag off indicator lit although the passenger sits upright
  • Safety note: side airbag may be wrongly enabled or blocked; work on the seat back only de-energised and initialise the system afterwards, specialist workshop only

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,000
Time0.5–3 h

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

Parts involved

passenger occupant position sensor asrs seat wiringoccupant position module

Related codes

B00C8B00A1B00B7

References: patents.google.com, rts.i-car.com, honda.ca.