Greetings. I’ve dealt with one of these before. The problem you are having is that the CC lines are damaged on one side of the charge port.
It’s basically one of three things:
- Damaged USB Type-C port CC pins (replace the connector)
- Damaged ESD protection IC on the CC lines (remove the IC, it’s not essential)
- M92 chip has a faulty CC detector (replace the chip)
In my case, I did 1 and 3 multiple times, until I discovered 2 and realised that the ESD protection IC was killing the CC signalling. I’d start there as it’s the easiest to check.
Check out this thread: https://www.tronicsfixforum.com/t/fast-charging-on-only-one-side-of-usb-c-cable/938