How the hell so I fix that?

 

Isn't that the code for the exhaust pressure for the DPFE? Check the hoses to the sensor...it's on the driver side...two rubber hoses coming up from the exhaust manifold to the DPFE sensor. One probably has a hole in it.

 

Yea I figured that out. but what is the DPFE

 

Check out this from another forum...

http://www.ford-trucks.com/forums/14...oes-it-do.html

 

P1405 is the code for the upstream vacuum hose (bigger of the two on some models) on the DPFE sensor. It specifies the upstream side of the sensor hose. Most likely a break or hole in the hose, sucking air, causing the code. You can possibly spray the hose down and find the leak, if you use a good carb cleaner like Berryman or JB. NO Gunk, Gumout, etc. They are not good for testing. You could also just replace the 2 short hoses if you have questions. That would be a simple repair if all it is was the hose.

 

Yea just trying to locate it was my problem. Is it under the 5.4 engine cover?

 

yes it is, and the sensor itself is fifty bucks

 

Ok thanks, would imagine just the hose has crapped out I was under there couple days ago changing plugs so I.could have bumped it.

 

If you're talking the rubber hoses to the dpfe, NAPA has em in a two pack for like $6. They're pretty nice and exactly what I have on my truck.

 

I thought my 2001 had a recall for the DPFE. Maybe you can still get it replaced for free