Trouble Code P1780 - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 07-05-2013, 12:59 PM Thread Starter
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Question Trouble Code P1780

I was driving this weekend with a good amount of bricks in the truck bed. A little hill so i put the (Hull/OD) swithch on. Truck wasn't even breaking a sweat all guages were good. About 30 miles in to the trip home a green wrenc pops up. Get home and it give me a code P1780 - Transmission Control Swithc O/D cancel Circuit out of self test range. Truck did not go in to a limp mode. Once i shut the truck off the wrench went away. Anyone have any ideas.
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post #2 of 2 Old 08-10-2013, 07:15 AM
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Tow/Haul switch is probably dinked or sticking.

Used to be VERY common with the older style columns, only ever changed a couple on the 08+ columns.

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