My '02 F-150,4.6 is throwing a code of:
P0406 Exhaust Gas Recirculation (EGR) Sensor A Circuit High
It is causing my truck to stumble at low acceleration.

Any help would be greatly appreciated.

 

Check your wiring going to the DPFE. Check the connection and the wiring harness to it.

 

Right! Click the link and scroll down towards the bottom for the full writeup

http://www.fordscorpio.co.uk/egrmonitor.htm

After you check out the link and check a few things out , post back and someone will help .. Or ask another question if you have one..