less than 24 hours after buying a used 2009 WRX the Check Engine Light came on with the traction control light and cruise is blinking. I brought it to the dealer (Subaru Dealer) and they said it was my SPT exhaust giving it a falso positive. They beleive the previous owner had an access port with a tune. They have ordered me a new access port and will re-tune my car next week (Nov 19th 2012). I will keep you posted. I will also look for a fan running under the hood tonight.