It happens at the worst time - stuck in traffic or a long road trip - when you see that check engine light flick on. Here's why it may keep returning.

Changing the oil is the most common maintenance you'll have to do on your car, but what happens when the check engine light ...

What Causes the Check Engine Light to Come On? Every vehicle contains many sensors designed to illuminate the check engine light, signaling something is not safe or not operating properly. Many of ...

A vehicle’s Check Engine light can turn any car ride into a harrowing experience.

Your engine oil plays a crucial role in your vehicle's performance, but could low levels trigger a check engine light? Here's what you need to know.

While your check engine light is obviously meant for engine issues, it can often give you clues to problems in other parts of the car as well.

"The check engine light is designed to come on when a vehicle's on-board diagnostic system sees a problem that impacts emissions or drivetrain issues," said David Rich, CarMD technical vice president.

Cars My car’s check engine light keeps on coming back John Paul, AAA Northeast's Car Doctor, answers a question from a reader who keeps getting warning messages in his convertible.

A check-engine light could be a gentle reminder or a sign of something catastrophic. We explain what a malfunction indicator light is and what you can do about it.