(HELP) Code: U0146 - Lost Communication with Serial Data Gateway Module 'A'
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Cross-Country
Joined: Apr 2020
Posts: 57
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From: Canada
(HELP) Code: U0146 - Lost Communication with Serial Data Gateway Module 'A'
Can someone please help me. I have a check engine light on due to a code U0146 - Lost Communication with Serial Data Gateway Module 'A'.
This happened when I changed the tire size on my F450 through Forscan. The tire size I switched to was 2641mm which is a confirmed valve as per the tire calculator. I completed a relearn of PCM, TCM and AWD modules and tired to clear codes multiple times with no luck.
Any suggestions?
This happened when I changed the tire size on my F450 through Forscan. The tire size I switched to was 2641mm which is a confirmed valve as per the tire calculator. I completed a relearn of PCM, TCM and AWD modules and tired to clear codes multiple times with no luck.
Any suggestions?
Lead Driver
Joined: May 2021
Posts: 5,787
Likes: 3,444
From: Uh oh, CA
Have you tried putting the original values back in to see if that clears it? When I did mine I didn't do a relearn of the AWD module... but I see in your sig that you have a 25. Have these changes been confirmed for the 25MY's?
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