I wish the original poster would update this thread, I have the same issue at about 2.5 miles on mine.  Solid light and no code.

So I just went through the same issue solid light no blink
It was a fuse under the hood
That was broke on the side so you really couldn't see it had to put a light behind it to find the crack but runs like a top something so simple sometimes causes the worst issues
I Had a pile of codes

Also an obd2 reader will show codes I used one by "blue drivers" it's a blutooth reader an showed everything
There under 100 cad online
I'd just pull an replace a fuse at a time an see

My neighbors U Force 1000 EFI light has just come on solid around 4,500km. I did a full service for him at 4,300km at which I replaced the paper air filter for an oiled UNI filter.
What would be the next move?
Should I buy/borrow a OBD2 scanner and look for error codes and try to reset the light?

[2015 Z Force 800 53/Trail EPS]

I thought there was a mode that displayed the error code on these new ones.

As far as I know, according to the U Force owners manual page 149 & 150, you can get the 4 digit error code from counting the flash sequence of the EFI malfunction indicator light, but if the fault light is solidly illuminated then that obviously doesn't work.