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Dan
Dan, ASE Certified Technician
Category: Ford
Satisfied Customers: 1613
Experience:  Auto Technician
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Po401 replace egr ,had bad wires replaced pigtal, egr works

Customer Question

po401 replace egr ,had bad wires replaced pigtal
JA: Have you checked all the fuses? Do you have a wiring diagram?
Customer: egr works with scanner
JA: What is the model/year of your Ford?
Customer: 2003 f250 6.ol
JA: Are you fixing your F250 yourself? What have you tried so far?
Customer: yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: remove intake and cleaned it new egr cooler
Submitted: 5 months ago.
Category: Ford
Expert:  Dan replied 5 months ago.

Hello my name is***** am an ASE Master Technician and I am glad to help you out with your question.

Expert:  Dan replied 5 months ago.

Is there a drivability concern along with this code?

Expert:  Dan replied 5 months ago.

Was the egr replaced with a factory part?

Customer: replied 5 months ago.
black smoke factory part
Expert:  Dan replied 5 months ago.

Does it have any aftermarket programmers or power chips installed?

Customer: replied 5 months ago.
no
Expert:  Dan replied 5 months ago.

Any other codes?

Expert:  Dan replied 5 months ago.

The po401 is an insufficient flow code. There could be something blocking the pipe farther up in the bracket.

Customer: replied 5 months ago.
no more codes I remove the cooler replace it and clean intake
Expert:  Dan replied 5 months ago.
Have you replaced the egr valve?
Expert:  Dan replied 5 months ago.
they won't, the job has to be done at the dealer.
Expert:  Dan replied 5 months ago.
That was not for you sorry
Customer: replied 5 months ago.
replaced egr vavle
Expert:  Dan replied 5 months ago.

Check the wiring harness, if the harness is ok the this is most likely a pcm issue.

Expert:  Dan replied 5 months ago.

Hello again Dan here,

I am contacting you because the post has not been closed or rated.

This question is coming up on 7 days which means it will time out and close.

You have already paid to get this question answered, but you have not rated.

Let me help some more. Is there anything else I can help you with?

If I did not give you 5 star service, please let me know what I missed.

Thanks