B0080 code meaning
Driver Seat Belt Load Limiter Deployment Control
What B0080 means
B0080 reports a fault in the firing loop that switches the driver's belt force limiter. In adaptive retractors a small squib, fired by the airbag module, changes the level at which the webbing is paid out, so the chest load suits crash severity and occupant. Mercedes-Benz uses the code exactly so: topic LI54.21-P-070658 (cars of the 177, 118 and 247 series) gives B008013 for an interrupted igniter of the driver's belt force limiter, traced to raised resistance at the airbag module plug. Ford names B0080 among the restraint module codes cured by reprogramming on 2017–2018 Fusion/MKZ, without giving its meaning. Older GM-built Saabs (9-3, 9-5) use B0080 for an internal fault of the driver-side B-pillar or side impact sensor instead. With the code set, the airbag lamp is lit.
B0080 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 B0080
- Airbag warning lamp on, sometimes with an SRS message in the cluster
- Driver's belt keeps only its basic force limiting level in a crash
- Safety note: pyrotechnic part in the driver's retractor; work only de-energised (battery off, wait time) at a specialist workshop
Common causes of B0080
- Most likelyRaised contact resistance at the airbag module connector (Mercedes LI54.21-P-070658)
- PossibleChafed or disconnected lead to the driver's retractor at the B-pillar
- Less likelyRestraint module software needing an update (Ford Fusion/MKZ)
- Less likelyInternal fault of the load limiter squib in the retractor
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Driver load limiterSquib circuitSRS control module
What each part of B0080 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). |
| 80 | The exact fault in that area. |
What to do next
- Note B0080 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 B0080
What does B0080 mean?
B0080 means "Driver Seat Belt Load Limiter Deployment Control". B0080 reports a fault in the firing loop that switches the driver's belt force limiter. It is a generic code, so it means the same on every make.
Is it safe to drive with B0080?
B0080 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0080 fail an emissions test?
B0080 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 B0080 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0080 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.