Q: I am experiencing the check engine light coming on and sometimes blinking. The blinking seems to occur during city driving. I have had a readout at a parts store and it indicates misfiring. In t… ...

Driving with a flashing Check Engine light should be an immediate cause for concern, so it's important to stop and consider your options for repairs.

Consumer Reports explains what the check engine light means and what to do when you see it: how to tell if your car has a loose gas cap—or a serious engine problem.

But if the Check Engine light is flashing, you need to take care of this right away. That flashing light is warning you that the catalytic converter is being damaged.

The engine light on your dashboard is important and needs your attention. Usually orange or red, it might look like a small engine symbol or show a message like "Check Engine." When it lights up, it ...