When your vehicle's check engine light (CEL) comes on, it's often a sign that something needs attention. But with over 20,000 parts working together in your car — many important for normal operation — ...

Dear Car Fix: Last December I bought a 2009 Pontiac G6. I have been having an ongoing problem with the "check gas cap" light coming on intermittently. I know the gas cap is on tight. I turn it four or ...

If you have a Honda Accord and see the ‘Check Fuel Cap’ notification, there are various possible explanations, some of which are more extensive than others. A loose gas cap commonly causes this, but ...

In a recent column, you talked about how a vehicle’s emissions system monitors itself for leaks. And that if a gas cap is loose and lets vapors escape, that will turn on the check engine light. Well, ...