My #12 cel p2000 came on yesterday so i went to my friend at the dealer to turn it off. While I was there we called Cummins and spoke to thier head tech. He said that a new flash will be out in may targeting the P2000 and they are developing new shielded O2 sensors. My friend also said that when he left school last week that his instuctor said that by 2010 or 2012 that all diesels will have to retroed to dpf!!!!!!!!!