I need help! P0401
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Senior User
Joined: Aug 2006
Posts: 201
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From: San Mateo
I need help! P0401
I have had a DTC coming up on my truck for quite a while now and I have tried to replace and check a number of things in hope that it would go away. The code is P0401.
I have checked and replaced some of my vacuum hoses, changed the plugs, cap and rotor and wires, changed the fuel filter, checked the fuel pressure which is fine, had my injectors cleaned, cleaned my Air mass sensor and still no good.
I did all of the above as I was told any of those could be the culprit.
But no, still getting the code!
Getting very bad fuel economy and truck is idling rough.
Any help much appreciated.
I have checked and replaced some of my vacuum hoses, changed the plugs, cap and rotor and wires, changed the fuel filter, checked the fuel pressure which is fine, had my injectors cleaned, cleaned my Air mass sensor and still no good.
I did all of the above as I was told any of those could be the culprit.
But no, still getting the code!
Getting very bad fuel economy and truck is idling rough.
Any help much appreciated.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Why start a new thread on the same issue when you already have an active one going: https://www.ford-trucks.com/forums/1...dtc-p0401.html ?
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ghardy7605
1997 - 2006 Expedition & Navigator
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Oct 14, 2009 07:06 AM
