B0011 code meaning
Passenger Frontal Stage 2 Deployment Control
What B0011 means
B0011 is the passenger counterpart of B0002: it concerns the second inflator stage of the dashboard airbag, which the module adds in severe crashes or fires with a delay. Mercedes-Benz logs B001113 for an open stage 2 squib of the front passenger airbag, and Mitsubishi lists B0011 as passenger airbag module 2. Stage 1 of the same bag has its own code B0010, a third element B0012. Since both stages leave the module through one connector, a code for stage 2 alone usually means a fault in the stage 2 pins, lead or squib rather than a general connector problem. Older GM modules (Saab 9-3 up to 2011) put passenger stage 2 faults under B0012 to B0014 instead. The airbag lamp is on and adaptive inflation for the passenger is lost.
B0011 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0011
- Airbag warning lamp on
- Passenger airbag loses its second stage for severe crashes
- Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed
Common causes of B0011
- Most likelyPoor contact on the stage 2 pins or open stage 2 lead
- PossibleStage 2 squib in the passenger airbag module faulty
- Less likelyOutput stage in the restraint control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Passenger airbag moduleSRS wiringSRS control module
What each part of B0011 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). |
| 11 | The exact fault in that area. |
What to do next
- Note B0011 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 B0011
What does B0011 mean?
B0011 means "Passenger Frontal Stage 2 Deployment Control". B0011 is the passenger counterpart of B0002: it concerns the second inflator stage of the dashboard airbag, which the module adds in severe crashes or fires with a delay. It is a generic code, so it means the same on every make.
Is it safe to drive with B0011?
B0011 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0011 fail an emissions test?
B0011 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 B0011 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will B0011 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.