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221 Posts
replace the temp sending unit inside the trans. $15 at ford
 

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The Unseen Mod
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4,126 Posts
Improper temps yes, it can throw a soft code possibly. But something internal is what cause the tow/haul to flash its basicly limp mode cause it doesnt like something that is going on.
 

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Former Ford Trans Engr.
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3,124 Posts
A bad temp sensor will set a hard code and flash the tow/haul light.
 
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