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Reasons your check engine light comes on and how to interpret it

When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...
SlashGear

When A Solid Check Engine Light Turns On, How Long Is It Safe To Keep Driving?

Modern-day vehicles are equipped with numerous sensors designed to monitor every aspect of the car. If one of these systems detects an issue, it is likely to trigger the warning system, which will ...

Here are the most-read 'Car Doctor' questions and answers of 2025

Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.
How-To Geek on MSN

This $20 device told me exactly what was wrong with my car

A p0440 error code can mean several different things, ranging from a loose gas tank cap to a major emissions leak, a bad ...
jdpower

Check Engine Light - What It Means and What to Do About It

When the check engine light comes on in a vehicle, it’s indicating that there is some issue with the car that should be checked out. It could be something minor, such as the gas cap not being screwed ...
Forbes

Study Shows Almost Half Of All Cars Are Driven With Warning Lights On

All vehicles built since 1996 are equipped with what’s called an OBD II (onboard diagnostics) system that taps into a car’s electronic control unit on a real-time basis and illuminates either of ...
SlashGear

6 Fluids Your Car Needs (And How Often You Need To Check Them)

It's no secret that our vehicles require a massive number of parts to function. Whether you drive a car with a traditional internal combustion engine or a modern electric vehicle, at least one thing ...