Common eBike problems and solutions

Hey everyone,

I'm curious about common eBike problems you've encountered, especially for those of us who like to tinker and DIY. My Bafang BBSHD mid-drive on my fat bike has been mostly rock solid, but I've had a few moments where the PAS sensor acted up after a particularly muddy ride. What are some of the most frequent issues you've faced with your eBikes, regardless of type (hub, mid-drive, etc.), and what DIY solutions did you come up with? I'm always looking for tips to keep things running smoothly and maybe even improve reliability.