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Is there a fuse to look for?
Vehicle: 2005 Ford Freestar 3.9 ltr,

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HI there

This code is for the keep alive memory for the computer. There is a fuse to check under the hood. Here is some more info on the code for you with a user submitted video

P1633 FORD - Keep Alive Power Voltage Too Low

Read more: https://www.autocodes.com/p1633_ford.html

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