Obdaryn

B0013Passenger Knee Bolster Deployment Control

  • Generic OBD-II code · Body
How the car detects it
B0013 belongs to the knee airbag on the passenger side, which deploys from the lower glovebox area and keeps the passenger's knees and thighs from sliding under the dash. Mercedes-Benz logs B001313 for an open squib of the front passenger kneebag. Ford pairs B0013:1A with the driver knee code B0004 on the 2024 Ranger; the TSB has all four airbag connectors checked, the passenger knee airbag being C2433, and swaps those with the wrong moulding number. GM uses the same number differently: in its later modules B0013 is stage 2 of the driver steering wheel airbag, with the same fault bytes as B0012 (Saab 9-4X 2011, GM 2009 Cobalt coil coverage). So a GM vehicle needs a check at the steering wheel, other makers at the passenger knee airbag. The airbag lamp is on.
What you may notice
  • Airbag warning lamp on
  • Passenger knee airbag (or on GM driver airbag stage 2) may not deploy
  • 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
  • LikelyFaulty connector at the passenger knee airbag (Ford TSB 24-2444)
  • PossibleOn GM vehicles fault in the driver airbag stage 2 loop or clock spring
  • RareInternal fault in the passenger knee airbag
Repair
Workshop only · Usually a job for a workshop.Typical cost: €100 – €900
Related codes

Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.