Special Service Message PO181-Fuel Temp. Sensor - Ford Powerstroke Diesel Forum
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Old 02-22-2012, 05:06 PM
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Special Service Message PO181-Fuel Temp. Sensor

Three weeks ago I went to dealer with engine light on problem. Ford told me is was fuel temp. sensor which they replaced. Since then every night I was using my block heater, yesterday engine light came on again. Today went to same dealer they diagnosed same problem (fuel temp. sensor) and dealer was told by Ford not to fix the problem until farther notice. Dealer gave me note from Ford saying:
Effective date 02/22/2012
22227 6.7L-Diagnostic trouble code (DTC) P0181 when using block heater
Some 2011-2012 F-Super duty vehicles equipped with a 6.7 diesel engine may exhibit DTC P0181 when customers use the block heater. Do not attempt to repair this concern by replacing the fuel rail temperature sensor (9F951). Tis concern is currently under engineering investigation.

Is anybody else having this problem
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Old 02-22-2012, 05:14 PM
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Is it saying the temp is too high or too low? Or that the sensor itself it bad?
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Old 02-22-2012, 05:32 PM
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I think the sensor is bad, dealer sad they can't change the sensor for second time and is ok to drive.

Last edited by gryzula40; 02-22-2012 at 05:39 PM.
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Old 02-22-2012, 07:07 PM
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Old 02-22-2012, 09:33 PM
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Pretty much our hands are tied until engineering comes out with an updated fix.
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Old 12-18-2013, 10:20 AM
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Anyone ever get an update on this? My '12 just threw this code twice this week. It was very very cold both times...
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Old 12-18-2013, 10:30 AM
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I know Chevy's with a Duramax engine have the same problem, if they are plugged in when the temps are above 0 degrees I believe, they set the same code. According to the TSB, it has to do with a difference in the fuel temp sensor and the intake air temp sensor I believe. It's been a while since I've read the TSB, but I remember it had to do with the block heater warming the engine and the fuel temp being out of range with the other temps that were warmed by the block heater. I would imagine the Ford's could have the same issue, but I haven't heard of them yet, and I usually don't plug mine in. Hope this helps.
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