Body, generic

B007C Second Row Right Seat Belt Pretensioner B Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B007C is the second-row right counterpart of B007B: an additional pretensioner stage at the right outer rear seat. No manufacturer publishes this code. On that seat Mitsubishi uses B0075 for its retractor pretensioner and Mercedes uses B00E4 for the right rear emergency tensioning retractor, so neither leaves a role for B007C. A B stage would typically be a buckle or anchor unit acting on the lap belt; NHTSA's 2013 evaluation explains how a buckle pretensioner pulls the buckle down by a cable and piston, while Joyson describes lap tensioners working with the retractor. Rear lap units are far less common than front ones, so this code is unusual. When it does appear, the airbag lamp stays on and that stage cannot be counted on.

Likely causes

Plug of the right rear buckle or anchor tensioner loosened during seat work
Airbag module configuration lists a stage that is not installed
Internal fault of the right rear B-stage tensioner

Symptoms

  • Airbag warning lamp on
  • Right rear lap belt not pretensioned in a crash
  • Safety note: the tensioner contains a pyrotechnic charge; only work on it with the battery disconnected and at a specialist workshop

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–600
Time0.5–3 h

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

Parts involved

second row right pretensioner bsquib circuitsrs control module

Related codes

B0075B007BB00E4

References: crashstats.nhtsa.dot.gov, joysonsafety.com, mitsubishitechinfo.com, static.nhtsa.gov.