Body, generic

B0041 Third Row Left Frontal Stage 1 Deployment Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0041 would report the first stage of a frontal airbag for the left third-row seat, which would have to deploy from the back of the second-row seat in front of it. Such bags are described in patents, for instance a Daimler application for an airbag at the rear of a front seat and a Mercedes-Benz filing that compensates for a sliding seat with stacked chambers, but no production vehicle with third-row frontal airbags is known; the S-Class rear airbag serves the second row only. No maker documents B0041. GM's old numbering is unrelated: for the Saab 9-5 of 2006 B0041 means an open driver side airbag loop, read as more than 4.5 ohms over 2 seconds. Airbag lamp on.

Likely causes

Loose connector of the airbag lead in the second-row seatback
Lead strained when the second-row seat is folded or slid
Restraint module configured for equipment the vehicle does not have (wrong part or coding)

Symptoms

  • Airbag warning lamp on
  • Frontal airbag for the left third-row seat may not deploy
  • 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
Time1–4 h

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

Parts involved

third row left frontal airbagsquib circuitsrs seat wiringsrs control module

Related codes

B0042B0043B0049B0040

References: patents.google.com, patents.google.com, saabwisonline.com.