How to determine whether your car has a loose gas cap—or a serious engine problemThis is what the check engine light looks ...

Car diagnostic tests are typically carried out when a vehicle’s dashboard shows a “Check Engine” signal or other warning light illumination. They can also be performed preventatively as part 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.

"OBD" stands for On-Board Diagnostics, and it's a standardized way for the engine control computers to report problems. When the check engine light comes on, the system records a code that ...

Few things are more frustrating for drivers than the dreaded check engine light, which signals a potential problem with the car's engine without providing a specific hint about the issue.

“Ignoring the Check Engine light can cause a car to fail an emissions test and can result in the ... These are the 10 most common diagnostic-light warnings identified by the 2024 CarMD Vehicle ...

You’re driving along in your car or truck and suddenly a yellow light illuminates on your dash telling you to check or service your engine. If you’re like most car owners, you have little idea ...