Add Yahoo as a preferred source to see more of our stories on Google. Modern cars are technological marvels, and understanding what’s happening under the hood has never been more important—or more ...

An OBD2 (On-Board Diagnostics II) scanner can provide information about the status and health of various vehicular systems. This information can help inform the user as to what the source of a problem ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The check engine light by its nature is vague, just a general indication that ...

At PC Labs we have specific, repeatable tests to evaluate every type of scanner, from basic sheet-fed models to those that handle slides and film. Here's how our experts put scanners through their ...

Dear Car Talk: I’m a shadetree mechanic and recently bought an OBDII/CAN scanner. I chose the cheapest unit I could find (about $25), and it seems that all it will do is read and/or clear any codes ...