"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 ...

The OBD acronym stands for on-board diagnostics, a system built into modern vehicles that monitors the performance of the engine and other critical components. An OBD system records diagnostic trouble ...

Add Yahoo as a preferred source to see more of our stories on Google. Since the mandate of the OBD-II port in 1996, auto mechanics have accessed vital information about your vehicle by tapping into ...

OBD-II diagnostic device BlueDriver interprets engine error codes to suggest what might need fixing, and lets you know if your car is ready for a smog check. Wayne ...

If you own a car built after 1996, it comes equipped with a second-generation onboard diagnostic (OBD or OBDII) system. These systems work together with the vehicle's primary computer or powertrain ...

Automotive experts note that inexpensive OBD-II code readers can perform core tasks like reading and clearing engine codes, while higher-end scanners provide broader system access, live data, and ...

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 ...

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 ...

️ 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, ...