B0030Second Row Left Side Airbag Deployment Control
- Generic OBD-II code · Body
- How the car detects it
- In J2012 the B003x block covers the second seat row, and B0030 is the left rear side airbag, mounted in the rear door or the outer backrest. Mitsubishi files B0030 under the rear side airbag module LH and sets a short to another circuit after 2 seconds. Mercedes-Benz reads B003013 as an open squib in the left rear sidebag on the A-Class, CLA and GLB, often caused by higher contact resistance at the restraint unit connector (LI54.21-P-070658). The older GM numbering differs: on the 2006 Saab 9-5, B0030 is a passenger side airbag loop whose pin voltage is above 4.1 or below 1.0 volts for 2 seconds, and the Saab 9-3 reads it as a passenger side bag short. The right-hand rear twin is B0038. Airbag lamp on.
- What you may notice
- Airbag warning lamp on
- Rear left side airbag may not deploy in a side impact
- Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed
- Likely causes
- LikelyRaised contact resistance at the restraint module or rear side airbag connector
- PossibleDamaged lead in the rear door transition or rear seat backrest
- RareInternal fault in the rear left side airbag module
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.