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

The best OBD-II scanners are a must for any car owner, thanks to their ability to unlock the secrets of your car. It doesn't matter how laid back you are, a mysterious light on your dashboard is ...

this tool provides basic diagnostics for four systems, along with complete OBD2 functionality. The D5 includes 9 special functions, while the D5S enhances your capabilities with 15 special ...

Here's what you need to know. Your vehicle's engine control module (ECM) includes readiness monitors, a self-diagnostic software program that verifies the OBD II system is operating as designed.