That little yellow check-engine light is sneaky. Most of the time, you forget it could be there. But when it detects an issue, it illuminates menacingly. For many, the initial reaction might be to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Modern cars are technological marvels, and understanding what’s happening under the hood has never been ...

Code readers are diagnostic tools that every car owner should consider owning. Having one of these is as important as carrying a spare tire or a fire extinguisher in the trunk. Back in the day, before ...

If you’re not sure which OBD2 code reader to buy, we've found the perfect one for you at Walmart. Right now, the bestselling ...

An OBD-II scan tool is an incredibly useful automotive diagnostic device, but it's not magic. Here's what it can and can't do.