B0012Passenger Frontal Stage 3 Deployment Control
- Generic OBD-II code · Body
- How the car detects it
- In the J2012 order B0012 is the third element of the front passenger airbag. Mercedes-Benz uses B001213 for the squib of the vent valve in that airbag, and Mitsubishi lists B0012 as passenger airbag module 3. GM gives the number a different meaning. Its later sensing and diagnostic modules assign B0012 to stage 1 of the steering wheel airbag; the Saab 9-4X 2011 manual trips it after two seconds of contact with supply or ground, an open, more than 4.4 ohms or less than 1.7 ohms; GM bulletins link it to chafed coil wires on the 2009 Cobalt and to weak terminal tension at the coil connector on the 2015 CTS. Older Saab 9-3 modules used B0012 for low resistance in the passenger stage 2 loop. Read the code with the maker's tool before choosing which airbag to check.
- What you may notice
- Airbag warning lamp on
- Depending on maker, passenger airbag venting or GM driver airbag stage 1 affected
- 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
- LikelyOn GM vehicles weak terminal tension or chafed wires at the steering wheel airbag coil
- PossibleOpen or shorted third squib (vent valve) in the passenger airbag (J2012 meaning)
- RareRestraint control module fault
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.