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Weird U0422 code

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WildHorse

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Long cruise today. Problem solved.
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Few hundred more miles.. Zero codes. Lesson learned. Don't put tune on top of tune on top of tune. Especially with major changes. Flash to stock then load the latest custom tune
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rabid_josh

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This may not help but these things throw communication codes without lighting the dashboard pretty frequently (this is info coming from a long time Ford Tech {not me}) You could clear it and just see what happens especially if its not effecting anything
 
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This may not help but these things throw communication codes without lighting the dashboard pretty frequently (this is info coming from a long time Ford Tech {not me}) You could clear it and just see what happens especially if its not effecting anything
If you read from the beginning, i couldn't clear the code.
 

rabid_josh

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Zrussian13

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When I had a U code pop up last year I couldn't clear it after fixing the problem either. I had to go through so many drive/ key cycles before it cleared itself.
 
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Ok just for shits & giggles. I added a 325/45R17 (28") tire size through my handheld. Went to check the active codes. And what do you know ? U0422 popped up. Couldn't clear it. Went to the stock tire size of 235/50R18 (27.3") tire size, checked active codes, boom, gone. W.T.F. haha. The tried a 275/40R19 (27.5"), PP1 size (closer to my MT 28x11.5x17 tires). Same, no codes.

So I left that value. Went to go compare speeds with GPS. After a few miles 30 mph indicated, 30 mph GPS, 60 mph indicated, 60 mph GPS, 120 mph indicated, 120 mph GPS. Looks like it indeed, self corrects, and that U0422 code is directly related to the tires.
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