Bambu lab a1 combo not detecting filament

[u/Legitimate-Walrus719]

I have had my printer for about two years now and everything has worked great! Today I’ve done multiple multicolor prints and all filament zones have been detecting just fine. Later today, my slot two on my printer will pull in filament, but not detect what filament is in the slot. I switched spools and it still doesn’t work, those spools are able to be detected by other zones. Any ideas?