Body, generic

B0029 Right Curtain Deployment Control 1

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B0029 stands for the first firing loop of the right curtain airbag. FCA's STAR case S2010000001 for the 2019 Ram heavy-duty pickup reads B0029-11 as a ground short in right curtain squib 1 and sends the technician to the wiring at the C-pillar trim fixings. Mitsubishi lists the right curtain module under B0029 and sets the ground short after 2 seconds. On the A-Class, CLA and GLB Mercedes-Benz stores B002913 for an open squib of the right window bag. Older GM modules used the number for the passenger side airbag: the 2006 Saab 9-5 sets it when resistance stays above 4.5 ohms for 2 seconds. B002A is the second right curtain loop. Airbag lamp on; the curtain may not deploy in a side impact or rollover.

Likely causes

Lead pinched or chafed at pillar trim fixings (FCA S2010000001)
Raised contact resistance at the curtain or restraint module connector
Internal fault in the right curtain airbag module

Symptoms

  • Airbag warning lamp on
  • Right curtain airbag may not deploy in a side impact or rollover
  • 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€100–1,000
Time1–4 h

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

Parts involved

right curtain airbagsrs roof wiringsrs control module

Related codes

B002AB0021B0028

References: static.nhtsa.gov, mitsubishitechinfo.com, static.nhtsa.gov, saabwisonline.com.