Well I took the Earth lead off the battery for 30 mins in a vain hope that would reset the EML
But still there, and it seems it can be any One of 15 things
I did take off the spark plug leads, and it still started and ran as normal? (as it did with the EML on and in limp mode) so that didn't answer any questions either
So it looks like a trip to the Stealer
Can't believe I finally managed to save up for a modern bike with low Miles, and the bastard still break on me lol