Your vehicle has a problem if the check engine light (CEL) glows. Diagnostic trouble codes (DTCs) stored in the computer help find the cause.

Car owners are familiar with that dreaded feeling when the “check engine” indicator lights up on the dashboard display. It could be a minor issue, such as a loose gas cap, but it could also be ...

Some 2005-09 Scion tC models may turn on the check engine light and store one or more EVAP system trouble codes in computer memory. The codes you might encounter are P0455 and P0441 together, or P0456 ...

I have a 2014 Buick LaCrosse with 35,000 km. A check-engine light comes on after a fill-up, then goes away a few days later depending how many times I drive. Next fill-up, same problem. I make sure ...

Q: I own a 2005 Saturn Ion with the 2.2-liter engine. At approximately 90,000 miles the "Check gas cap" warning light came on, which shortly thereafter triggered the "Check engine" warning light. I ...