F1 Light is on :( help please

[ROD]

Tried new fuel ( after totally draining old fuel ) No go - got multimeter out - 12.5 at battery - 13.8 when bike running so thats also charging --- guess next step if fuel injector cleaner -- this bike is a 2000 model so cant put it into dealer mode that i am aware of ??

Did the early models not have the plug left lide of ecu tucked under rear duct tail

I will get manual out and have look