In the Last diagnostics article, we outlined how to retrieve and decipher engine diagnostics for engines running OBD-I engine management computers. OBD or On Board Diagnostics is a subsystem of the ...

Most of us cringe in fear when the check engine light in the dashboard of a modern 4x4 is tripped on. Your mind begins to spin in frustration wondering what could have triggered it, how bad it really ...

This article was updated in August 2025 with new products and information. That little yellow check-engine light is sneaky. Most of the time, you forget it could be there. But when it detects an issue ...

If you've ever gone to a mechanic for a check engine light problem on your car, then chances are you've heard the technician say something about an OBD scanner. It's a handheld phone-like device that ...

We've all been there—that pesky check engine light pops up on your dashboard. Instantly, thoughts of expensive mechanic bills, weeks of it being repaired in the garage, and inconveniences galore flash ...

Modern vehicles are rolling computers, with systems managed by embedded hardware and software designed to talk to the manufacturers' diagnostic tools locally and wirelessly. While this complexity can ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The check-engine light suddenly appearing on your dashboard is enough to dampen any drive. For the ...