On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to …

Nov 19, 2025 · Did your vehicle's check-engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle. This article was updated in November 2025 …

Here are the best OBD-II scanners you can buy right now, based on our own hands-on testing. You can scroll down the page to find more in-depth information about each mode, and what makes them...

OBD-II codes alert you when your car is having issues – everything from airbags to brakes. The most common place to access them is through the OBD-II port under your vehicle’s steering...

Sep 15, 2025 · That's where OBD-II scanners come in, giving enthusiasts and everyday drivers a window into their vehicle's diagnostic systems.

Jul 23, 2025 · OBD-II (On-Board Diagnostics, Second Generation) is a vehicle monitoring system that tracks the performance of the engine, transmission, and other critical components. It uses sensors …

Dec 26, 2025 · OBD-II, short for On-Board Diagnostics II, is the built-in system vehicles use to monitor engine operation and emissions while the car is running. It tracks performance continuously, rather …

Aug 14, 2025 · In short, OBD2, or OBD-II, is a diagnostics system found in today's cars and trucks. It's like the vehicle's health check mechanism, consistently monitoring different parts and systems. When …

Jul 18, 2025 · Automotive OBD2 scanners and car code readers are the easiest and least expensive ways to find out why your engine light is on and get it to turn off. I’ve used dozens of scan tools over …

OBDII is a standardized system for vehicle self-diagnostics and reporting. Developed to unify the diagnostics processes across manufacturers and models, this system was implemented to ensure …