On Board Diagnostic (OBD2) is your vehicle's built-in self-diagnostic system. It’s the standardized system that allows external device to interface with a car’s computer system and access data. It has become more important as cars have become increasingly computerized. If you are looking to get more control over your car and save money on maintenance, you’ve made it to the right place. When you have the malfunction indicator light (or check engine light), or want to get OBD2 data that is not showing on the dashboard like Coolant & Oil temperature, Fuel Trim, O2 Readings, Mass Air Flow and more, you can use a Veepeak OBD2 scanner to diagnose the issue and read these sensors.