Body, generic

B0002 Driver Frontal Stage 2 Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Open stage 2 squib lead at the airbag module connector
Stage 2 track in the clock spring broken
Replacement restraint module loaded with unsuitable software (Land Rover SSM 74577)

Symptoms

  • 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

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–1,200
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver airbag moduleclock springsrs wiringsrs control module

Related codes

B0001B0003B0011

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, patents.google.com.