Unresolved issue check engine light.... ARRG - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 01-13-2013, 11:07 AM Thread Starter
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Unresolved issue check engine light.... ARRG

Here's a little background, 2012 F250 Diesel, 4200 miles and the CE lamp comes on in the morning while idling before driving to work. I call the dealer and they tell me it will be a week before they can get it in for service. I drop by the parts store and have them plug in and read the codes. I am told it is a coolant temp sensor code and head for home.

The dealer has the truck on Thursday morning for an oil change and and to check the code. Just before 5PM they call and tell me the code is not corrected and they need it over night and have to let it sit for 10 hours and do a cold check and then a drive test and check. I leave it overnight and around 4 pm Friday evening the call to have me come pick it up.

They tell me they couldn't repair the issue as Ford doesn't have an answer for it yet. The code is P012F, if I have the truck plugged in I need to unplug it 30 minutes before i try to start the truck otherwise it will happen all over again. I read the service bulletin then had from engineering and the seemed clueless about what caused it and what the workaround was going to be.

They cant tell me when this will be corrected or what is causing it. I can get out there and unplug the block heater early before work but I don't like the way the dealership and Ford seemed to have no plan to report back to the owners when this is corrected. I'm suppose to deal with it and remind the dealership at service appointments to look into it again
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post #2 of 3 Old 01-13-2013, 04:16 PM
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I got code P0181 Fuel temp more than 18 degrees (Celsius) difference between fuel and incoming air temp. I had been plunging it in once it got bellow 32 like I did with my 1992 F-250 and my 6.0. well the dealership told me not to plug it in till it got bellow 0 or it would happen again. and the owners guide says the same thing it don't need to be plugged in till 0 fahrenheit. don't know if that will help you or not but I haven't plugged it in since and no more codes.

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post #3 of 3 Old 01-13-2013, 06:42 PM Thread Starter
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At this point I think I will pick up a high watt rated timer for he mornings when it drops to the point where I need to add block heat. So far this mon it looks like it will be close to 20 but not much lower. Should buy me some time to pick one out.
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