A day after I made it home from the LA event, my "Check Engine Light" message started scrolling across the speedo face. I pulled the key and reinserted it like the manual said, but couldn't get rid of the message. Everything was working though, as well as all fuses and vital fluids were OK. I took it in for my 9K service today and the dealer said it was a failed oil pressure sensor. It if happens to you, it might be this...
Pat
Pat