First see if it's really EDC16C3 because the more nine have EDC16C36 and the protocol it is equal, and not read with MPPS...
Second, the engine temperature must be below 50 degrees to read it in serial.
Then, Scenic II with engine code F9Q 803, F9Q F9Q 804 and 814 have EDC16C3 and with F9Q 870 and F9Q 872 have EDC16C36 but these are scenic III produced from 2009 forward...at least so says ESItronic...