I have the same car that is also throwing P0200. This code can mean several different things, and you really need a manufacturer specifc code reader to get to the details. My subcode is P1975 and it is related to the crossover valves. Car runs great so I haven't been too ambitious about getting it resolved. Here is the thread where I pull my hair out trying to resolve it:

http://www.peachparts.com/shopforum/showthread.php?t=258494

If you read on the page 3 area, you will see some discussion of the EGR.