When I start a print and it starts the auto bed leveling the nozzle scrapes my bed plate really bad and faults out. I can print something just fine then the next print this happens. I’ve had this printer for 3 months and this is the first time it’s happened.
Did you check your home position and Z axis offset for the idle position?
Its worth checking whether everything (all the screws) are tight. Check all the screws, and check also to make sure the nozzle itself is tight - if its loose and lower than normal, that could be the issue
Did youd find a solution or root cause? My K2 started exactly the same today right between two print jobs. Additionally it shows me that there is Error T2761 (something with sensor data).
Horrible … if i start a calibration (as the support-bot told me) the bed raises towards the nozzle, touches it, stops for a bit of a second and then tries to push even further upwards.
K2 Pro Firmware Issue – What I’ve Experienced
It appears the latest K2 Pro firmware update may be causing the bed to rise too high, allowing the nozzle to hit and gouge the build plate. This can make it seem like the strain gauge is bad.
Here’s what I’ve experienced:
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Replaced the strain gauge three times with no change.
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Flipped the build plate over and gouged the other side.
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Purchased two additional build plates and have already ruined one.
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Purchased three nozzles, thinking the nozzle might be the problem. The K2 can accept two nozzle types, but only the Unicorn nozzle is correct.
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Tried rolling back the firmware to an older version, as others have reported success with this. Unfortunately, it did not fix my problem.
After a lengthy discussion with Creality, the technician could not determine the cause. My information has now been forwarded to their engineering department for further investigation.
At this point, my machine is essentially unusable. I’m hoping Creality can determine the cause and repair or replace the machine.
I’ve had the K2 Pro for about six months and have really enjoyed it. It has produced a lot of great prints, with only normal wear-and-tear part replacements. Unfortunately, this firmware issue may have permanently damaged the machine.
I also have a Bambu printer sitting in my cart ready to purchase, depending on how Creality handles this situation.
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If you do get a solution I’d love to know. I’m having exactly this issue. It was printing fine and then all of a sudden these issues happened. I haven’t changed anything but it seems almost identical to what you are describing. I have tried most of what you listed above and reluctant to spend more time or money after reading through your experience.
Another update to my previous post. Creality finally got back to me after a couple of weeks and they are sending me all of the parts I’ve already replaced Plus the main printhead board and for my trouble a spool of filament. The parts are on the way and I will let everyone know if that helps or not but I don’t think I’m going to update the firmware and stick with the last update before the most recent just in case. Seems to be a lot of this going on and I am wondering if the update is cooking the main board. Keep on top of them otherwise you’ll get lost in the shuffle and end up like the poor gentleman that waited a year or more to get his replaced. So far I’ve been able to keep up with the little bamboo p2s, which by the way makes a smoother print but is a little smaller and just slightly slower. I will update after I install all the parts they send me and see if that fixes the issue.
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Well folks, here’s the newest update!
I received a new hot end with nozzle, a new PC main board for the print head, a new strain gauge and hardware, and, for some reason, I’ll be receiving a ribbon cable for the main connection next week. 
I installed everything, which I’m getting pretty good at by now—this was probably the fourth or fifth time I’ve done it.
I left my old gouged bed plate installed and ran the leveling calibration to see what would happen. As expected, the print head went to the center, touched down twice, then jammed into the bed. Thankfully, it wasn’t nearly as deep as the original crash.
Normally, I would stop the machine at this point because there’s no way to use the touchscreen to interrupt the calibration. This time, I decided to let it continue.
Surprisingly, the machine worked through the entire sequence. After cleaning the nozzle, the print head moved to the back of the bed. The bed actually lowered enough for the head to pass over it, touched down twice as part of the cycle, and then moved over to the rear tab to scrape the nozzle. After that, the bed returned to its normal leveling procedure.
The good news is everything is now working normally! I ran a couple of prints last night, and the results were actually better than what I was getting before the breakdown. I’m very happy to have the machine back up and running.
If you run into the same problem and receive replacement parts from Creality, which can take up to three weeks, my suggestion would be to leave your gouged or damaged build plate installed while you run the calibration cycle. In my case, letting the machine complete the cycle appears to have allowed everything to reset and operate normally.
If anything else comes up—or something else gets damaged—I’ll be back to let you know.
Thanks for tuning in, and happy printing! 
New update below in forum! Good News? I guess? Depends on patience and if you buy or wait for Creality.