Body, generic

B0075 Second Row Right Seat Belt Pretensioner Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0075 is the right-hand counterpart of B0073: the pretensioner at the second row's right outer seat. Mitsubishi lists it as PRE-TEN REAR RH with the J2012 title and tests the circuit whenever the ignition is on; byte 11 stands for a short to ground and 13 for an open circuit, while further bytes cover shorts to power, crossed wires, high resistance or a configuration mismatch, each after 2 seconds. Toyota names B007512, a short to battery, in its 2022 Tundra bulletin about the Qi charger. Rear retractor wiring passes through seat and trim areas that are opened during interior work, which makes a disturbed plug the usual suspect. With the code active, the airbag lamp is on and the right rear passenger may not be pulled back into the seat in a crash.

Likely causes

Plug at the right rear retractor not fully latched after interior work
Chafed lead to the right rear pretensioner (short to ground or power)
Interference from added electronics, fixed by an ECU update (Toyota Tundra 2022)
Internal fault of the right rear pretensioner

Symptoms

  • Airbag warning lamp on
  • Right rear occupant without belt pretensioning in a crash
  • Safety note: the rear retractor contains a pyrotechnic charge; work on it only de-energised and leave it to a specialist workshop

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–600
Time0.5–2.5 h

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

Parts involved

second row right pretensionersquib circuitsrs control module

Related codes

B0073B007CB00E4B0055

References: mitsubishitechinfo.com, mitsubishitechinfo.com, mitsubishitechinfo.com, static.nhtsa.gov.