The Check Engine Light (CEL) happens when there is an issue. If you clear it manually, it may keep returning until the ...

Have your owner’s manual handy. Place your vehicle in “park,” or “neutral” for a manual transmission. Firmly set the parking brake. Download and install the manufacturer’s code reader app to your ...

That Check Engine light can mean so many different things, as can any noticeable difference in your car's performance or weird sounds. Fortunately, there are ways to narrow down the problem using ...

Uh-oh. A warning light has turned on in your car. What should you do? Thankfully the Car Doctor, John Paul from AAA Northeast, has the answers.

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The check engine light by its nature is vague, just a general indication that ...

The check engine light (CEL) comes on when the on-board diagnostics second generation system (OBD II) detects an emission system problem. And yes, you can legally turn off the CEL yourself. But is ...

In the last Diagnostics episode, we outlined the vital information provided by compression and leakdown testing and illustrated how to use these most important tools. These tests reveal the internal ...