The EFI light is on and not Flashing. Comes on after about 1 mile. Dealer  said they reset light and did not find reason for light on but came back on after a mile. Anyone had this problem and if so what was wrong. Dealer said they have had 5 other machines do this but stayed off after they reset light. Machine has less then 400 miles on it and runs great with light on.

Found plug to O2 Sensor not seated in all the way. Cleaned and rehooked  -- OK Now

[2015 Z Force 800 53/Trail EPS]

Good..yeah that'll do it.

I had the same issue this weekend.  The EFI light would come on at random times but no issues with the machine. Everything ran great.  Where if the O2 sensor that was loose?