That Check Engine light can mean so many different things, as can any noticeable difference in your car's performance or weird sounds. Fortunately, there are ways to narrow down the problem using ...

When your dashboard check engine light (CEL) or other warning lights illuminate, your vehicle’s engine control module (ECM) senses a problem. The ECM then generates and stores a diagnostic trouble ...

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 ...

Some 2004-06 Mitsubishi Lancer models with 2.0-liter engines may run rough and illuminate the check engine light. When you hook up your scan tool, you may find trouble code P0171 (lean exhaust) stored ...