Some 2004-06 Lancer models with 2.0-liter engines may run rough and illuminate the Check Engine light. When you hook up your scanner, you could find trouble code P0171 (lean exhaust) stored in PCM ...

Acura reports that some 2007-08 TL Type S models may turn on the check engine light and store trouble code P0171 and/or P0174 in the PCM. If there are no drivability symptoms associated with the ...