DPFE fault code

[LAndrus]

99 XLT 4x4 3.0L

Threw a DPFE code. I replaced the DPFE, twice, and it keeps throwing the code. I attempted to test the last DPFE and it came up with a high voltage. Does anyone have any clue what may be causing the P1401 code? I find it hard to believe that 2 new DPFE sensors are bad out of the box.

Thanks in advance.

 

[fastpakr]

This will help:
http://easyautodiagnostics.com/ford/4.6L-5.4L/how-to-test-the-egr-system-3

 

[97RangerXLT]

My 97 did this a few years ago. I replaced the vacuum hoses to and from it and problem solved

AJ

Sent from my SM-N910V using Tapatalk

 

[LAndrus]

This will help:
http://easyautodiagnostics.com/ford/4.6L-5.4L/how-to-test-the-egr-system-3

The voltage with the Key On Engine Off is almost 5 volts. I know that is far too high. I believe it should read at or below 1 volt

 

[LAndrus]

I'll try the hose route.

 

[fastpakr]

Is it possible you're measuring at the input voltage wire? There should be three total - a ground, 5V input, and signal output. If you're getting 5V on the input wire that's no problem. If you're seeing it at the output wire with the engine off, I'd be looking for a short between the two wires somewhere in the circuit.