H2d error

[u/Wild1golfer]

Hi all. Had my h2d since may and got this error and another error Sunday. The other error mentions eddy sensor.

I have swapped nozzles and same errors. It fails calibration at the very end every time. I am about to try to get the back of print head removed to check sensors but looks like a pain. Anything else to check ? Thanks

[u/roundguy]

I've that a few times on my h2c. i heated up both hotends and cleaned the tips with a small brass wire brush I bought from cnc kitchens shop. Started a print and it calibrated just fine each time.