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Dan, Technician
Category: Ford
Satisfied Customers: 23473
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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I have a diagnostic code P0401 and am wondering if the

Customer Question

I have a diagnostic code P0401 and am wondering if the dealership is the only place I can take to fix it?
JA: Have you scanned the code? Have you tried to reset it?
Customer: I did using a OBD Scanner, not sure how to reset it...
JA: What is the model/year of your Ford?
Customer: 2004 Explorer (Limited.. not sure if that makes a difference)
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Just getting into it, would love to fix myself, but not sure how in depth the procedure is.
JA: Anything else you think the mechanic should know?
Customer: no
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Ford Mechanic about your situation and then connect you two.
Submitted: 4 months ago.
Category: Ford
Expert:  Dan replied 4 months ago.

Hello, my name is***** you have the V6 or V8 engine? Thanks.

Customer: replied 4 months ago.
Customer: replied 4 months ago.
Is there a way to reset and see if it comes back up?
Expert:  Dan replied 4 months ago.

This most likely means the EGR valve has failed which is about a $200 job at a shop or $100 if you replace yourself. Here is a picture to help find part if you plan to do yourself. Let me know if you have more questions, thanks.


Expert:  Dan replied 4 months ago.

You can have codes reset at parts store for free but if problem was to stop then light would go off by itself.

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