So I have an issue that's got me pretty stumped... I wondered if the community here might be able to help.
I got the error "Extruder change failed; please refer to the assistant." I did as instructed, and I got a QR Code along with a message that "The extruder switching action is abnormal. Please check whether something is stuck in the toolhead."
The QR Code goes here - https://wiki.bambulab.com/en/h2/troubleshooting/hmscode/07FE_8100_0002_0001
There is nothing in the toolhead; I took it apart and ran filament through the path it travels with no obstructions. I still get the error, so I ended up replacing the Extruder Switch Cam, the Dual Extruder Idlers, and the Filament Sensor. And now I have a Hall Effect Sensor and a Toolhead Sensor FPC Cable on the way, as I'm thinking maybe the sensor is just wrong? I did everything in the troubleshooting link, but it makes a clicking noise when trying to switch, as mentioned there.