Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

Remember, the code reader won't tell you how to fix the check engine light—the code it reads just directs you to the fault. From there, unleash your mechanical prowess and discover the cause!

Discounts like this don’t usually last for long, so visit Amazon’s site today and get your hands on the Umeija OBD2 ...

Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

If you see the check engine light and haven’t filled up with fuel recently, it’s a good idea to use a code reader or take your vehicle to a shop for diagnosis.

P0442 is one of the Diagnostic Trouble Codes (DTCs) identified by the engine control module (ECM). If you have an OBD-II code scanner, you can identify the problem yourself and try some steps to solve ...

From simple engine code readers that can help you double-check a mechanic’s diagnosis, to more sophisticated devices that track your driving or let you fine-tune your car’s performance, here ...

Consumer Reports explains what the check engine light means and what to do when you see it: how to tell if your car has a loose gas cap—or a serious engine problem.

CarMD, an automotive telematics company, published a list of the most common check engine codes in 2020, along with their estimated cost of repair.

Sure, you could spend the money on a good Ford-specific EEC-IV diagnostic code reader, but why do that when you could just as easily test for trouble codes manually? Yes, you heard that right.