Obdaryn

P1774CAN network: gearbox computer stopped transmitting (bus off)

  • Suzuki code · Transmission
  • Can trigger limp mode
How the car detects it
The automatic gearbox computer could not get its messages confirmed on the CAN network, so it stopped sending (a "bus off" state) and limits shifting and lock-up.
What you may notice
  • Limited shifting and no torque-converter lock-up
Likely causes
  • LikelyCAN wiring open or shorted, or a loose connector
  • PossibleAnother computer on the network disturbing it
  • RareAutomatic gearbox computer

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