B0086Third Row Left Seat Belt Load Limiter Deployment Control
- Generic OBD-II code · Body
- How the car detects it
- B0086 is reserved for a switchable force limiter at the left third-row seat. No manufacturer documents it, and an electrically fired limiter that far back is unusual. Delphi's rear-seat patent explains why: without airbags or weight sensing in rear rows, it picks the level from the length of webbing drawn out, about 4–6 kN for a large occupant or a child seat and 2–3 kN for a small occupant. NHTSA's 2013 study likewise counts load limiters as standard only at the front outer seats. On GM Global A cars (2011 Saab 9-4X) B0086 stands for the right front side impact sensor, watched for shorts and opens, too little current, internal errors, an incorrect part and corrupt messages, each needing ten seconds to set. Where a third-row limiter loop does exist, a fault lights the airbag lamp.
- What you may notice
- Airbag warning lamp on
- Left third-row belt limits force only at a fixed level
- Safety note: restraint system with pyrotechnic parts; work only de-energised at a specialist workshop
- Likely causes
- LikelyOn GM vehicles, right front side impact sensor or wiring faulty (different meaning)
- PossibleThird-row harness stressed by folding or removing the seat
- RareInternal fault of the third-row limiter squib
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.