code p0401

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09-26-2008, 04:46 PM

vortech01vert

2nd Gear Member

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Join Date: Aug 2007

Posts: 291

code p0401

shortly after i installed my kenne bell i got this code. it says insuffient flow to the egr. it has never came on till after i put the kb on. i checked and everything is plugged in. any idea what it could be

09-26-2008, 07:06 PM

WhiteFoxGT

Resident Ford Troll

Join Date: Jul 2006

Location: Delaware

Posts: 6,717

Pull the DPFE off and bang on it in your hands, check to see if water comes out.. If so replace it...

Its most likely a line not hooked up to the DPFE...

09-26-2008, 08:30 PM

vortech01vert

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Join Date: Aug 2007

Posts: 291

Ok ill check it tomorrow. It looks like everything is hooked up but maybe the sensor is bad. The car drives like crap when the service engine light is on so I hope I can get it fixed

09-26-2008, 10:03 PM

blackstallion666

4th Gear Member

Join Date: Jun 2007

Location: Cumberland County NJ

Posts: 1,369

If all your lines are hooked up correctly and the egr selenoid is pluged in. I would bet on the DPFE sensor. I honestly replace about 5 of them a month on customers cars at work. they always go bad.

09-26-2008, 10:08 PM

mustangman281

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Join Date: Sep 2008

Location: tn

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Quote:

Originally Posted by vortech01vert

Ok ill check it tomorrow. It looks like everything is hooked up but maybe the sensor is bad. The car drives like crap when the service engine light is on so I hope I can get it fixed

The code is for an emissions failure, so the reason the car runs like crap is because you probably forgot a vacuum line or one is broken not because the light is on.

09-27-2008, 01:12 AM

vortech01vert

2nd Gear Member

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Join Date: Aug 2007

Posts: 291

well when i delete the code with my friends handheld the car drives great but as soon as the light comes on it starts driving like crap again. so i dont understand what it is

11-27-2011, 05:50 PM

jgordon

1st Gear Member

Join Date: Aug 2009

Location: pa.

Posts: 64

DPFE SENSOR

MY 01 GT RUNS LIKE IT HAS 20 EXTRA HP WHEN I REVERSED THE
HOSES ON THE DPFE SENSOR,BUT THE SES LIGHT COMES ON.
WHEN THE HOSES ARE HOOKED UP RIGHT I CAN TELL THE
POWER LOSS,BIG DIFFERANCE.ANY IDEAS?