Just picked up my new 1100 s from the dealer today and during my 4 hour ride home te check engine light came on. The bike had 2600 miles on it from the previous owner and right at 2700 miles the check engine light came on the bike had been serviced before I took it over. I had just put gas in it 10 miles before the light came on and I put premium fuel in it mabey that gas had been in the ground to long. I pulled over and checked every thing out looked good and it ran fine. Restarted the bike and the light came back on. Got home and went back out on it and no light. What causes the engine light to come on? Is it just coming on to remind of service?