What causes USB-C Ports to stop working on MacBook Pro?

Rohankrishna119 wrote:

I own a MacBook Pro 16 inch 2019 model and when I noticed today the one of the 4 usb c ports wasn't working it worked until yesterday and also looks like rest all ports are working as well . I did have a cheap amazon usb c hub plugged into it so can it be the reason the port is not functioning ?̶

A̶l̶s̶o̶ ̶m̶y̶ ̶b̶a̶t̶t̶e̶r̶y̶ ̶s̶h̶o̶w̶s̶ ̶5̶6̶8̶ ̶c̶y̶c̶l̶e̶s̶ ̶s̶o̶ ̶c̶a̶n̶ ̶t̶h̶i̶s̶ ̶b̶e̶ ̶t̶h̶e̶ ̶r̶e̶a̶s̶s̶o̶n̶ ̶b̶u̶t̶ ̶i̶t̶ ̶d̶o̶e̶s̶ ̶s̶h̶o̶w̶ ̶t̶h̶e̶ ̶c̶o̶n̶d̶i̶t̶i̶o̶n̶ ̶o̶f̶ ̶t̶h̶e̶ ̶b̶a̶t̶t̶e̶r̶y̶ ̶i̶s̶ ̶n̶o̶r̶m̶a̶l̶ ̶

[Re-Titled by Moderator]

unplug all non-essential peripherals when testing to eliminate any conflict. Test one device at a time.

A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.