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.

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 ...

Your check engine light can come on for a lot of different reasons, but there are only a few that occur after putting in gas. Here's what we know.

"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.

Ignoring a check engine light might feel harmless if the car still runs smoothly, but the warning signals more than a mi ...

GM TechLink has found a wiring issue in GMC Canyon and GMC Sierra 1500 trucks that can make the check engine light stay on and cause false DTC code returns.

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. Learn what causes this notification and how ...

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.