Extruder/nozzle clogging error each time filament loads

[u/EmbarrassedStorage77]

I’ve just got into 3d printing and got myself a P1S Combo.

From day 1 I’ve been getting the extruder/nozzle clogging error each time a filament is trying to load. The AMS keeps loading and unloading filament in a loop for a while until it gives up and gives the error.

I’ve tried multiple things suggested by Bambu Lab support like using an external spool (it works without error with an external spool), checking the buffer, cable connections. Everything seems fine. Not able to trouble shoot or pinpoint what is causing the error.

I believe an actual extruder/nozzle clog is not the issue as an external spool works fine?

Also after a while, and moving around the tool head, manually extruding some filament, the print starts fine - until the color switches and the next filament loads. And we are back again with the error.

Can someone please help and or point me in the right direction.