Thanks to all who gave me advise on what to do with the sensor. Apparently it worked. The check engine light has not come on at all. I even bought the Chilton Manual to make sure I did everything right. Thanks everyone.
I need some help with a little problem I have. My check engine light came on, and I ran diagnostics on it and it came back with P0401. So I replaced the EGR Valve and found out that wasn't the problem. Now I get a P0402 and I think I have it narrowed down to the pressure sensor but I need some one to confirm that for me. What do you think?
If you've already done the EGR valve, the DPFE pressure sensor is the next likely culprit