I have a 2007 electra glide classic. Problem began, I accidently hit the kill switch and the ignition switch at the same time and noticed a "diagnostic code"... just the word diagnois, in the faring panel. Then it went away. I started the bike--no problem, perfect. The next few times I started the bike the check engine light would come on when starting the bike--I just never noticed this occurring before and it doesn't happen all the time. Sometimes the check engine light doesn't come on until after 10 or so second after the bike starts, again, sporatically. Yesterday that is what happened and the light goes out; yesterday also while sitting at a light, the check engine light came on and also the battery light--just about 5-10 seconds, both went out; rode home--no problem. A friend of mine who is a mechanic for 25+ years told me to reset my computer, so he had me turn the key on, cycle through the set up, and off (3x's). Then turn on the bike. No problem. So about an hour later I went out to check, "just to see", then again the check engine light came on about 5-10 seconds after turning on the key.