B0029 code meaning
Right Curtain Deployment Control 1
What B0029 means
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.
B0029 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0029
- 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
Common causes of B0029
- Most likelyLead pinched or chafed at pillar trim fixings (FCA S2010000001)
- PossibleRaised contact resistance at the curtain or restraint module connector
- Less likelyInternal fault in the right curtain airbag module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Right curtain airbagSRS roof wiringSRS control module
What each part of B0029 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). |
| 29 | The exact fault in that area. |
What to do next
- Note B0029 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 B0029
What does B0029 mean?
B0029 means "Right Curtain Deployment Control 1". B0029 stands for the first firing loop of the right curtain airbag. It is a generic code, so it means the same on every make.
Is it safe to drive with B0029?
B0029 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0029 fail an emissions test?
B0029 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 B0029 to fix?
Difficulty: workshop only. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will B0029 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.