On-board diagnostics (OBD-II) scanners, required in U.S. vehicles since 1996, have progressed from simple fault code readers to advanced systems capable of real-time data monitoring and, in some cases ...

Modern technology has made diagnosing vehicular issues much easier than ever before. Using an OBD2 (On-Board Diagnostics II) scanner is a relatively simple process that can provide crucial information ...

Code readers are diagnostic tools that every car owner should consider owning. Having one of these is as important as carrying a spare tire or a fire extinguisher in the trunk. Back in the day, before ...

️ Editor's note: This product category requires new testing about once a year. We'll update this article with the most recent information when it's available. Modern cars are technological marvels, ...

OBD2 scanners aren’t just for mechanics anymore — they’re a game-changer for everyday drivers. From decoding check engine lights to spotting issues early, these tools can save you time, money, and ...

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 ...

This article was updated in November 2025 with new information. You know you’ve earned your DIY stripes when you can stay calm the moment something goes wrong. And with cars, that moment usually ...