Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

A basic tool for basic needs, this scanner is a no-brainer if you don't already have one.

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

Well, GM says +/-10 but the pros say +/-5. First, you are going to use the VCM Scanner tool. Plug the interface cable into the vehicle's OBD-II port and PC serial interface and run the VCM Scanner.

OBD-II is the standard diagnostics port in cars, and it's been that way for years. When did it replace OBD-I in motorcycles? Which one does your bike have?