Could be a lot of different things - try searching here for related issues, like K2 Plus Nozzle not heating as expected Issues
Also check out K2 Plus User Guide | Creality Wiki for official troubleshooting steps.
Could be a lot of different things - try searching here for related issues, like K2 Plus Nozzle not heating as expected Issues
Also check out K2 Plus User Guide | Creality Wiki for official troubleshooting steps.