I did the search, my question is this. I purchased a new DPFE from Ford 2-3 years ago. I had the metal body and they gave me the plastic body. The code came back a few months ago. Any idea? Am I fixing to drop another $120 on this piece of $h|t?

 

Probably, DPFE's that old are not the improved models.

 

Just so you know -PO401 is the same code and a more common one . Use that in your search as well..

 

I had no idea. So my DPFE may be fine, its just that POS K&N Drop in filter again..........
WTF

 

No, it's not the same fault. However, it often has the same root cause, ie, a faulty DPFE sensor.

The P0401 code can be caused by almost any of the other components within the EGR system, the P1401 fault code cannot. It can only be caused by an electrical or electronic circuit failure.

It is impossible for the K&N filter to cause this code.

Steve

 

Right!! The same sensor in most cases is most likley the fault - I should have said it that way..