After measuring 9 points, nozzle goes up and to the right, without printing.
I have already printed a lot of stuff. But suddenly after the sensing of the 9 points, in stead of laying the test line on the front. The nozzle goes up 4cm, goes almost completely to the right. And then I'm asked to unload the filament immediately.
I tried the complete calibration routine but this doesn't help.
Who can help me?
This sounds like a Filament sensor issue,
Is this a Mk3 or a Mk3S?
Mk3 filament sensors are susceptible to dust and filament colour, surface shinyness and transparency.
Mk3S filament sensors are finnicky to adjust some folk find adding a spacer under the filament sensor helps
I added an LED indicator to my filament sensor to give immediate status indication I used a 5volt LED...
Have you considered using 7x7 mesh bed levelling?
49 points are better than 9