B0047Left Curtain Deployment Loop Short to Ground
- Generic OBD-II code · Body
- How the car detects it
- B0047 is missing from the accessible J2012 lists as well, and no vehicle maker or NHTSA bulletin documents it, so it is not publicly traceable. The title names a grounded left curtain airbag loop; this inflatable curtain covers the side windows in side impacts and rollovers. Under J2012 this fault is normally stored as B0021 with byte 11: Mitsubishi sets B0021-11 once the left curtain circuit has been grounded for 2 seconds. GM Global A uses B0016 02 for a grounded left roof rail airbag loop, also after 2 seconds. A grounded lead often sits where the roof harness passes sharp body edges or trim clips. Airbag lamp on.
- What you may notice
- Airbag warning lamp on
- Left curtain airbag deployment may be blocked
- 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
- LikelyInsulation of the curtain lead chafed through against the body
- PossibleLead pinched by a pillar trim or headliner clip
- RareInternal short to housing in the left curtain airbag
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.