B0002 code meaning
Driver Frontal Stage 2 Deployment Control
What B0002 means
Dual-stage driver airbags hold a second charge that the restraint module fires only in severe crashes or after a short delay, so the cushion fills harder or for longer; a Nissan patent bases that choice on the change in vehicle speed and belt use. B0002 flags a fault in the firing loop of this second stage. Land Rover documents B0002-13 as an open stage 2 circuit on the Evoque, which also appeared after a module replacement had loaded older software (SSM 74577). Mercedes-Benz, Mitsubishi and FCA list it as the driver squib or module 2, GM as stage 2 of the steering wheel module. Because both stages share connector and clock spring, B0002 often comes together with B0001; alone it points to the stage 2 lead or squib. Adaptive inflation is lost and the airbag lamp is on.
B0002 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 B0002
- Airbag warning lamp on
- Driver airbag loses its second, high-severity stage
- 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 B0002
- Most likelyOpen stage 2 squib lead at the airbag module connector
- PossibleStage 2 track in the clock spring broken
- Less likelyReplacement restraint module loaded with unsuitable software (Land Rover SSM 74577)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Driver airbag moduleClock springSRS wiringSRS control module
What each part of B0002 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). |
| 02 | The exact fault in that area. |
What to do next
- Note B0002 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 B0002
What does B0002 mean?
B0002 means "Driver Frontal Stage 2 Deployment Control". Dual-stage driver airbags hold a second charge that the restraint module fires only in severe crashes or after a short delay, so the cushion fills harder or for longer; a Nissan patent bases that choice on the change in vehicle speed and belt use. It is a generic code, so it means the same on every make.
Is it safe to drive with B0002?
B0002 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0002 fail an emissions test?
B0002 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 B0002 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B0002 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.