K2 Plus Combo with two CFS

Hello together,

since the last firmeware Update (1.1.4.8) longer prints always stops randomly with this klippy error code:

{“code”:“key60”, “msg”:“Internal error on command:MOTOR_EXTRUDER_RETRY_PROCESS”, “values”: [“MOTOR_EXTRUDER_RETRY_PROCESS”]}

I also have many timeouts in my klippy log betweeb k2 plus and cfs. Furthermore I always need 3 to 6 restart trys because I often get the error CM2798-z1…

It is a hardware, or firmeware problem? Have other guys this problem too?

Greetings Fruchuxs

Have you tried reinstalling the previous version of firmware and see if it still an issue? My K2 Plus had a similar issue after the initial release of 1.1.4.8, was giving me the “key60” but for bed mesh instead of extruder. I reinstall an older firmware, did a factory restart, then let it update and was able to do all calibrations successfully. Now it is back to printing as good as ever.

I did get the CM2798-Z1 error previously but that was user error getting a strand of cloth caught in the screw when I was cleaning it and didn’t notice. Couple prints later is when it decided to start giving problems. If not a firmware issue, it can also be loose wire in a connector, driver on control board going bad, or maybe just a fault in the motor.

I have issues with firmware v 1.1.4.8 too when printing PETG….random error …in my case xs 2060…see this topic:

Error xs2060 K2 Plus + CFS - Flagship K Series / Creality Flagship K2 Plus & CFS - Creality Community Forum

Previous firmware is fine and does not show this error. So similar behaviour.

I do have same composition, one K2 Plus with two CFS