B0081 code meaning
First Row Center Seat Belt Load Limiter Deployment Control
What B0081 means
B0081 is assigned to a squib-switched limiter for the centre place of a three-across front bench. No carmaker publishes the code with this meaning. Mercedes-Benz files a first-row centre tensioning retractor under its own code B1B36, and NHTSA's 2013 study notes that load limiters became universal only at the two outer front seats. In practice the number almost always carries a GM meaning: on Global A cars such as the Saab 9-4X it means a passenger presence module fault (00) or a wrong module fitted (3A), with the passenger airbag disabled; GM special coverage N182188910 (2017 Buick Verano) and bulletin PIE0407B (Impala) deal with it. Saab 9-3 and 9-5 airbag modules use B0081 for a wrong passenger-side B-pillar or side sensor. Check the make before suspecting a belt.
B0081 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0081
- Airbag warning lamp on
- On GM vehicles the passenger airbag status shows OFF although an adult is seated
- Safety note: airbag system with pyrotechnic parts; diagnose and repair only de-energised at a specialist workshop
Common causes of B0081
- Most likelyOn GM vehicles, fault or mismatch of the passenger presence module in the seat (different meaning)
- PossibleWiring to a centre front seat retractor damaged in the seat base
- Less likelyInternal fault of the centre seat load limiter squib
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
First row center load limiterSquib circuitSRS control module
What each part of B0081 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). |
| 81 | The exact fault in that area. |
What to do next
- Note B0081 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 B0081
What does B0081 mean?
B0081 means "First Row Center Seat Belt Load Limiter Deployment Control". B0081 is assigned to a squib-switched limiter for the centre place of a three-across front bench. It is a generic code, so it means the same on every make.
Is it safe to drive with B0081?
B0081 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0081 fail an emissions test?
B0081 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 B0081 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0081 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.