P012f
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Freshman User
Joined: Apr 2015
Posts: 26
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From: Southern Utah
P012f
2005 F350 6.0L, I was towing my toy hauler when the wrench came on the code was P012F. The dealer has put 3 new oil coolers in and claims to have flushed the cooling system out throughty. After that I installed an external coolant filter, an external oil cooler, EGR delete and flushed the cooling system and a turbo back 4 inch exhaust.
I can only drive for around 50 miles then the P012F comes back. Has anyone got an Idea as what to do except blow it up??????.
I can only drive for around 50 miles then the P012F comes back. Has anyone got an Idea as what to do except blow it up??????.
Senior User
Joined: Mar 2012
Posts: 266
Likes: 1
From: WA
Ford TSB 09-24-3 - "Oil cooler efficiency monitor - DTC P012F stored and wrench warning lamp illuminated when the oil coolers efficiency drops below a specified threshold for a given speed and vehicle load condition."
Have you checked the difference in temp for the oil and coolant temp sensors after a long cold soak? They should be nearly identical.
What are your normal EOT/ECT readings after the truck is fully warmed up? Maybe one sensor is lagging or the other reads to high
after it gets hot?
Have you checked any of the normal wire chafing areas under the hood?
That's about all I got at the moment.
Bumpity bump.
Have you checked the difference in temp for the oil and coolant temp sensors after a long cold soak? They should be nearly identical.
What are your normal EOT/ECT readings after the truck is fully warmed up? Maybe one sensor is lagging or the other reads to high
after it gets hot?
Have you checked any of the normal wire chafing areas under the hood?
That's about all I got at the moment.
Bumpity bump.
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
2005 F350 6.0L, I was towing my toy hauler when the wrench came on the code was P012F. The dealer has put 3 new oil coolers in and claims to have flushed the cooling system out throughty. After that I installed an external coolant filter, an external oil cooler, EGR delete and flushed the cooling system and a turbo back 4 inch exhaust.
I can only drive for around 50 miles then the P012F comes back. Has anyone got an Idea as what to do except blow it up??????.
I can only drive for around 50 miles then the P012F comes back. Has anyone got an Idea as what to do except blow it up??????.
Posting Guru
Joined: Nov 2012
Posts: 2,123
Likes: 5
Thats ok I have every publicly published DTC code book up to 07 and it doesn't have that code either.
To me that TSB shows that Ford doesn't really want to have to find a actual soloution to a problem on a obsolete engine and just getting rid of the code so they don't have to deal with us.
But then I am a cranky old man. LOL
To me that TSB shows that Ford doesn't really want to have to find a actual soloution to a problem on a obsolete engine and just getting rid of the code so they don't have to deal with us.
But then I am a cranky old man. LOL
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