My 03 yzf r6 had been sitting in the garage for the last 2 months until last week when some one came and test drove it. Started up fine and this guy takes it for a ride, 2 minutes latter he calls saying the bike won't turn on. Pushed it home and hasn't started sense. The check engine lights on. When I turn the key to on all it shows on the "dash" is an "11" I bought a new battery, all fuses are good. Any idea of what can it be? Help... Thanx!!!