Page 1 of 1

F can bus code u0155 in a kswap 11 fit

Posted: Tue Dec 09, 2025 2:27 am
by boosthards2k
Give you the run down what I got, so I just completed k24z7 swap into ge 11 fit. No running issues only issue i Got is cel light on with dtc u0155 for f can bus failure, checked all my battery connection all the grounds, made sure connector A pins match the tsx pin out, check continuity between can bus hi and lo signal circuits to cluster, no unwanted resistance come to fine out this ecu im running shows written to tsx wagon ecu 37820-rl5-a05 so look up tsx ecu found 37820-rl5-a05 is m/t, confused

Re: F can bus code u0155 in a kswap 11 fit

Posted: Tue Dec 09, 2025 7:51 am
by Hondata
A U DTC is a network error. The ECU is trying to communicate with something on F-CAN which is different between vehicles.

Re: F can bus code u0155 in a kswap 11 fit

Posted: Tue Dec 09, 2025 3:07 pm
by boosthards2k
Im fully aware of that, ive reach to few people thats done this swap, and they said they never had this issue with this code, I suspect I got a corrupt ecu, since I seen that this ecu had a tsx wagon, I dont have any gauge problems, my next question is, ive notice other calibration file like for 11 civic si showed an option to toggle off this code, but i don't see one for tsx is there a calibration file I can use to eliminate this code like the other calibration

Re: F can bus code u0155 in a kswap 11 fit

Posted: Thu Feb 19, 2026 7:36 pm
by Heywier427
Did you run the extra wire from from the ecu to the obd2 port?

https://www.2nrs.com/cdn/shop/files/E5C ... 1736115797