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

Most code readers should also be able to clear codes, meaning you can erase whatever trouble code the car has logged to trigger the warning light in question.

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 ...

It happens at the worst time - stuck in traffic or a long road trip - when you see that check engine light flick on. Here's why it may keep returning.

It just so happens that my personal car has had a check engine light illuminated for quite a few weeks now. Below is a video test and review, using the FIXD code reader for the first time.

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 ...

It's tempting to keep driving, but choosing to ignore your check engine light could result in expensive repairs down the road.