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Quick update. My replacement TCU (took about 2 weeks) was installed by the LBS and the bike has been brilliant since. I have also replaced the original 46t chainring with a Wolf Tooth 50t and it’s made a significant difference especially on the flat road sections and there’s still enough range...

I had something similar the last ocuple of weeks. Mission Control error to check the cables and plug connections of the TCU. To ensure they are dry and clean. It made turning the bike on very sporadic and caused me to cancel a number of rides. LBS has contacted supplier for a replacement TCU.

New member and new owner of a Creo Turbo. Very unhappy to report the TCU has an issue on mine. Mission Control "System Event" recommended checking cables and plug connections, but all efforts didn't work. I am now waiting on a replacement TCU from Specialized. I 100% agree with the chain ring...