Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

What is an OBD scanner? OBD stands for "on-board diagnostics." It connects to your car's computer system and can read its internal codes to diagnose its mechanical and electronic ills.

Harbor Freight carries a wide-variety of products, including diagnostic tools like the Icon T10, but it comes at a price. Here's everything it can do.

Multi-system scan tools for inspecting systems besides the engine, such as the transmission and ABS Bluetooth or Wi-Fi scanners that connect your smartphone to your car's computer system ...