P0402 - excessive EGR flow at idle

cause: DPFE sensor

check it out and test it that should be the problem

I have a post from I think 2 summers ago about this and in there it will tell you how to check the EGR valve and if it passes it is the DPFE


- 95 Mystique LS - Zetec/5spd - 99 Contour SeVT Sport - Duratec/5spd Official NE-CEG Contour/Mustang Family