K2 Pro - So many errors, I don't know where to start

Flagship K Series Creality Flagship K2 Pro & K2
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I’ve purchased two K2 Pro Combos 6/3/26 and 6/23/26. In this very short period of time both of the printers are no longer working. I’ve had numerous errors for both printers and both are no longer usable. The errors cover filament jams, abnormal resistance in movement, leveling sensors damaged, retract issues for X and Y axis, filament feed issues, CFS isn’t accessed and forced to the Spool Holder, so many errors I have no idea where to start troubleshooting. I tried to open tickets 7/5/26 but when submitting the form, I would get an error, very fitting at this point. I tried later and still no change.

This time I contacted a human and asked for a refund or replacement of the printers. Now it sits in the support ticket queue. At least it is in the queue. I’m giving this a week. If I don’t get fixed or remedied, I’m going to have the charges reversed.

Earlier, the printer head was completely engulfed in PETG. I’ve had these problems with Ender 3’s but one of the reasons I got K2’s was for their system to identify and stop the print before this happened. I submitted a ticket and I never heard from anyone. I checked to see if the ticket had any eyeballs but no ticket, gone.

They call the K2’s their flagship printers. The only flag it deserves is the White Flag, I give up.

Some of the errors from both printers. Both are showing similar errors.

Print heads are slamming into the walls, hard.

FR2849: Retract issue, filament cannot be returned to CFS hub.

FO2837: Feed issue, filament may be jammed between the extruder sensor and the extruder gear.

CM2789: Abnormal resistance in the movement direction

TE2762：The nozzle leveling sensor may be damaged or the wiping module may have fallen off.

FR2849：Retract issue, filament cannot be returned to CFS hub.

FO2837 - Feed issue, filament may be jammed between the extruder sensor and the extruder gear.

CM2789 (Y)：Abnormal resistance in the movement direction

CM2789 (X)：Abnormal resistance in the movement direction

TE2766: XY axis homing failure

XS2060：System error, try restarting Print heads slam into walls and door.

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I had a similar situation. Not all of the same errors, but most of them (I’m not using a cfs). After changing out several parts, it came down to the Print Head Cable (the one in the drag chain) Over time (mine took a year) all the movement on that cable causes intermittent connections that send the control computers nuts, and they spew all sorts of seemingly unrelated errors. There are a few posts like this… “tried everything, turned out to be the cable.” Since the CFS is involved too, you might look for other cables that take a lot of motion, related to CFS.

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Thanks for the info. I’m glad you were able to get it fixed. I want these printers to work but I don’t have the time to spend days/weeks getting them to work . I’m pressing to send me replacements printers but from what I’ve read Creality won’t do it. The drip of email responses is way too slow. I’m considering reversing the credit card charges.

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Was the printer head slamming into the left wall and or the other walls? Both are doing it for me.

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yes, it was intermittent at first, then got more and more often. It usually happened during axis orientation and I had to power cycle. What drove me nuts was it seemed like everytime one error would go away, a different one popped up.

If you do go for that cable, know that it is not as hard as the video makes it look.

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Thanks, I’ve finally have someone asking basic questions from Creality (after a week of waiting). I’m getting both CM2789 X and Y errors. Did you get both axis’ errors?

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All the errors were intermittent. I had a rash of x-axis errors, but the y-axis usually came up. The main thing with my problems with that cable was that the errors kept changing after every reboot. Finally they settled in on nozzle heating and communication errors, so I replaced the heat block, with no change. Then I went after the cable and that did it. I know that sounds easy, but I went through a lot of head scratching and little things (like replacing the thermal compound on my original heating block) before I got to the cable.

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I really appreciate your help. I have a feeling the communications with support will be 1 email a day so I need to provide anything to move this along. I’ll suggest the things you mentioned.

J

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i’ve only had it for less than a day, extruder issues on seems the CFS could deal with a quarte spool, i reset the connectors on the extruder stepper, i’m on my second bency, first was good, the second has layer sepreation 1/3 the way up, 950$ printer failed…….

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This is beyond frustrating. If I can’t get this resolved in a timely manner, I will be contacting my credit card company for a chargeback.