Trouble code U164F
Thread Starter
6th Gear
Joined: Jul 2025
Posts: 6
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Trouble code U164F
Has anyone encountered DTC U164F - lost communication with telematic control module on CAN bus 5?
No CEL and everything seems fine otherwise.. periodic soft close frunk issue, bot don't think it's related.
No CEL and everything seems fine otherwise.. periodic soft close frunk issue, bot don't think it's related.
Safety Car
Joined: Jun 2004
Posts: 3,500
Likes: 702
From: panama city beach florida USA
St. Jude Donor '09
GOOGLE says radio communication with the radio , low voltage ,failed update or just hooking up a scantool .......give it the new italian tune up= disco the batt.for 5 minutes. I have had fronk closing issues also on a new 25 e and no cell. IIRC weird meaningless codes like that were not uncommon with some gm cars , my c5 used to show them in history codes and no issues
