OBD Code

I have the Check Engine light on in my 99 Explorer (X code 4.0 engine) Brought it to the local auto parts store and had them do a diagnostics. Got a P1405 code which was not in my book. Did a search and found it is the Differential Pressure Feedback Sensor Upstream Hose Off or Plugged. Where is that hose????

Not sure of it's exact location but this is in reference to the egr valve and the dpfe (differential pressure feedback egr sensor). You should be able to find the egr valve and trace it to the sensor. Good article on this exact obd code is here http://www.gatewaycleanair.com/mechanic/air4_3/casestdy.htm

Maybe you can find something useful to help fix your problem. Good luck.