P0401 EGR Insufficient flow test

Here is how to test code P0401 and the DPFE sensor. Sure, the DPFE has a high failure rate, but do we "throw" the part at it, or do we test it to be sure it's actually failed. AND, this is a great way to confirm the repair to prevent a "come back"

Category:

Autos & Vehicles

Tags:

• P0401
• DPFE
• egr
• Ford
• diagnostics
• scanner
• lab
• scope
• automotive

[shackwrrr]

@wafrederick

If you look in the video, it looks like someone already tried throwing parts at it look how clean the DPFE sensor is

[lucky51762]

Another video said FORD has changed the design of the DPFE at least 4 times because of many failures.

I will never buy another ford after my F350 Van blew a spark plug right out of the cylinder head. Now the plugs break off in the cylinder head upon removal.

Many failures reported. All of those Ford V-8s are time bombs waiting to fail.

[mstrgns]

I had the same problem on my ford explorer, I replaced the egr valve,dpfe, and didn't fix the problem, now I know what could be the problem. Too bad, I sold the car.

Realfixesrealfast you're the best.

Thanx 4 all ur vids

[voiceofreason2008]

Hi realfixesrealfast

I have a UK specification Ford Focus with 1.6 DOHC duratec engine

I have just replaced the HT leads and spark plugs to eliminate a misfire issue which has been resolved but there is a seperate intermittant issue

Upon starting from cold fair infrequently the revs will jump up and down at a rate of about 3 times a second and will jump at a gap of about 300 revolutions per minute in a chugging fashion once the engine has warmed a little the issue goes away

what could it be

[lucky51762]

I have found this problem many times.,vacuum lines burned or chaffed.

[TheAxentioi]

hy realfixesrealfast i am from romania and i don't know what to do!!!!!! i have error P1125 the

ECU did not le me drive over 125km/h and 2500RPM. what is not corectly on value?

i have a video on my chanel. thanks!

[metalxesp]

great video

[mhollandmhs09]

Great Vid! Very Informative. I like how the instructions were very clear and the thought process of the technician was very easy to follow.

[279spirit]

why does the focous sound like a diesel

[speedbuggy16v]

as a former tech, thats been awayu a while, thanks for the info on how to diagnose this problem. I have been studiously ignoring the wifes toyota for the last month with this code

for lack of understanding of how easy it could be to diagnose.

thanks

cant see the forest for the trees

[Davy87nj]

Good video, going to start working at a new shop with possibly more diag in my future as a tech. Thanks for the before and after on the dpfe pid.