Piwis Cable for Porsche communicates with your car just like the factory tool does, and can access all of the systems in the car. OBD2 was created for emissions related problems and only covers a limited subset of your car's engine.
New PIWIS Cable for Porsche
1. functions Reset service reminders, Reads diagnostic trouble codes, Displays actual values, Shows ECU information, Clears diagnostic trouble codes, Turns off check engine light, Turns off airbag light.
2.communicates with your car just like the factory tool does