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

When the check engine light illuminates on the car's dashboard, it indicates that the vehicle's computer has detected a fault or anomaly in the engine system or related components.

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.

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 ...

The battery in my Toyota Tacoma dies periodically. My shop thought it was a parasitic drain, but after testing any drain was gone after 20 ...

The Check Engine light came on during the test drive. It is still the original engine under the hood of the E-Class, a power plant codenamed M112, known for its reliability. The gas-fed, four ...

John Paul, AAA Northeast's Car Doctor, answers a question from a reader who wants a check engine light cleared.