Thanks to all for your help. 2002 f 150 4.6l. 72,000. SES light on. Went to Advance and pulled the code. They attempted to sell a new EGR valve. I came to F150 ONLINE for the solution. Replaced the DPFE sensor. All is good. THANKS to all. Saved me the cost of hunting for a solution. Did the "suck" test on the EGR valve. It tested OK. Replaced the sensor. The SES light went out by inself after a few starts.

Again THANKS,

John