one port typc c left side down not work and not charch

Hello I have problem with left side type c port one of them (left side down) not working and not charging,

other port (left side up) working and charging but with os message say using much power and thunderbolt left side proximity 70° c

what is problem

is it only cd3215c00 or/and jhl6540

i try to replace type c connector but same problem

Thanks

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Try running the onboard diagnostics to see if you get an error. Restart your system and press the D key

Reference: https://support.apple.com/en-us/HT201255

Most likely your Thunderbolt port front end chip is damaged on your logic board.

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