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!

Although most check-engine malfunctions will require a code reader to diagnose, something simple to try is to make sure your gas cap is tightened — particularly if the light came on just after ...

With a code reader you might find you can simply turn off the check engine light yourself. However, if you haven’t fixed the problem, it will eventually come on again.

The scanner also allows you to clear the vehicle's internal code, which is what triggered the check-engine light. Do that, and the warning light will turn off. More on that later.

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.

The more modern code readers will explain what the issue is via a smartphone app or a more detailed interface. This information gives you a reference point when speaking with your mechanic, to ...

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

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

Having a hard time interpreting the car codes your dashboard is displaying? Car codes can be confusing, so here are the best OBD2 scanners for reading, analyzing and clearing diagnostic trouble ...

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 ...