My 2001 F-150 came up with this code and I changed the EGR valve cleared the code and it returned 15 miles later. Does any body know what else it could be? I appreciate any help the truck only has 30K miles and the warranty expired 24 May.
If your truck didn't have only 30,000 miles on it, I would take the egr valve back off, remove the throttle body housing, and clean the two egr ports and passage inside the throttle body housing. That is what cleared my low egr flow code. I've read alot of people replace the dpfe for this code and it doesn't help. You have the 4.6 V8? Ranger88 must be right.
Mine was closed up with hard carbon, cleaned at 128,000.
A guy posted a thread the other day, a mechanic wanted $900 to put in a new dpfe, which the guy did himself instead. Code still there. Good luck.
Last edited by FourthFordTruck; 06-09-2004 at 01:40 PM.
Thanks for all the suggestions. I going to do some cleaning then if that don't work I guess I will be replacing more parts. For FourthFord Truck I have the 4.2 V6. I've only had the truck for 2.5 months so I am not sure how the previous owner treated the truck. The truck is still running strong with no missing or hesitation. Thanks again for the suggestions.
Ranger88a deserves the thanks, but you are welcome Vegas. My submission seems
almost more confusing to me than helpful. Ranger88a was right on.
I meant to say I am not familiar enough with the 4.2 egr set-up.
I will remember the false egr code on lower mileage trucks as possible dpse trouble.
Just to let you know. I got the same code (P0401) on my 97 4.6l F150, and replaced the DFPE sensor right away. Didn't fix the problem, so I'll be cleaning the EGR ports next. A lot of people have said that this code means a bad DFPE sensor, and it's not always true (actually, it seldom is from what I gather). Now I'm getting a P0302 (#2 misfire) code, which I think might be related. I've replaced the coil packs and the plugs, and will replace the wires next.