B0075 code meaning
Second Row Right Seat Belt Pretensioner Deployment Control
What B0075 means
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.
B0075 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0075
- 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
Common causes of B0075
- Most likelyPlug at the right rear retractor not fully latched after interior work
- PossibleChafed lead to the right rear pretensioner (short to ground or power)
- Less likelyInterference from added electronics, fixed by an ECU update (Toyota Tundra 2022)
- Less likelyInternal fault of the right rear pretensioner
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Second row right pretensionerSquib circuitSRS control module
What each part of B0075 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 75 | The exact fault in that area. |
What to do next
- Note B0075 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B0075
What does B0075 mean?
B0075 means "Second Row Right Seat Belt Pretensioner Deployment Control". B0075 is the right-hand counterpart of B0073: the pretensioner at the second row's right outer seat. It is a generic code, so it means the same on every make.
Is it safe to drive with B0075?
B0075 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0075 fail an emissions test?
B0075 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B0075 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will B0075 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.