Obdaryn

B1211Seat-belt pretensioner firing circuit, driver

  • Ford code · Airbag (SRS)
  • Lights a warning lamp
How the car detects it
The airbag control unit found a fault in the firing circuit of the driver's seat-belt pretensioner (the charge that tightens the belt in a crash): a short to ground or to battery, an open circuit, too low a resistance, a circuit crossed with another one, or the wrong part fitted. The last two characters of the full Ford code say which. While an airbag fault is stored, the affected airbag or pretensioner may not deploy in a crash. Have it repaired before relying on it. Never probe airbag connectors with a meter: that can fire the airbag.
What you may notice
  • Airbag warning light
Likely causes
  • PossibleConnector under the front seat loose or corroded
  • PossibleWiring under the seat (chafed when the seat moves)
  • RareThe seat-belt pretensioner itself
  • RareWrong or incompatible part fitted

From Obdaryn's Ford pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.