sorrry , could not fig. out how to get back here .after i got a new password i forgot . the egr port into intake was carboned just enough to throw code cleaned ( lit torch in hole while runing) perfect now. thank again and sorry for not getting back

I have replaced the DPFE and it has a new EGR. Removed EGR and cleanded intake all tubes and hoses are clean or new, getting vacume to egr and it holds vacume. Still getting EGR code p0401. All electrical conections are clean.. The only thing left is the PCM?