Body, generic

B0182 Right Front/Passenger Side Buckle Tension Sensor Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0182 appears in no J2012 list and in no public document of any carmaker, so the code cannot be verified. Its meaning overlaps B0061, the passenger belt tension sensor, and B0140. Such a sensor sits at the lower belt anchor and tells the occupant detection system how hard the belt is pulled. Delphi's patent US6605877B1 feeds the sensor and reads its data over the same two wires; a tension above a calibrated value points to a child seat strapped down tightly, and the seat weight reading is corrected by the belt load. FMVSS 208 lets carmakers switch the passenger airbag off automatically for small children, which is where this signal matters. A circuit fault leaves the module unsure whether to permit the airbag, so it lights the airbag lamp.

Likely causes

Plug at the belt anchor sensor loose, corroded or pulled off when the seat was moved
Two-wire lead to the occupant detection module pinched or chafed under the seat
Sensor electronics faulty, for instance after a crash load on the belt

Symptoms

  • Airbag warning lamp lit
  • Passenger airbag off indicator behaves unexpectedly with a child seat or adult in the seat
  • Safety note: airbag and pretensioner plugs are close by; disconnect the battery and wait before unplugging anything

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–500
Time0.5–2 h

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

Parts involved

passenger seatbelt tension sensoroccupant detection modulesrs seat wiringsrs control module

Related codes

B0061B0140B0052

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