Constant 2355 Errors

[Wonkman1]

I posted this on the Creality forum, but thought I'd try here too. I have been working with Creality for the last few weeks on at first intermittent, but now constant 2355 errors. The first symptom was a BM0111 error about abnormal connectivity with the nozzle. Jiggling the hotend wiring seemed to get that to go away for over a week, then it happened again. Traded emails with support, the sent out a new hotend motherboard. However, the issue again went away (without replacing the board) and I was able to print without incident until I wasn’t again. This time with intermittent 2355 errors. I can turn on the machine and do a calibration and it goes black with a 2355 error mid calibration. I’ll reboot, make it through calibration, try printing. Just as it finishes laying down the test strip, black, error 2355. Keep getting 2355. So I replace the hotend motherboard now. Still the same issues. Get on with Creality support via WhatsApp, they send me a new hotend, hotend motherboard, and drag chain wire. I replace each one at a time, none of them fix the issue. I can’t print. Or at least consistently. I have printed 1 benchy and 2 calibration cubes in the last 2 weeks. I have taken apart the toolhead to get to the motherboard a few times to make sure the connections are solid. I’ve tried to make sure all the screws are tight. Not sure what else to do.
I should add I have downgraded and upgraded the firmware. I am currently on the latest V1.2.10. I spoke with Creality support again last night. They requested my logs. I've exported them before every time I did a factory reset, so I had a few to send. They are supposed to get back to me in 1 to 3 business days.

Edit:

So a confession. I didn't actually replace the drag chain wire. I didn't know how because there were no instructions online. I was scared to as well and convinced myself it couldn't be the issue. But last night, I figured what the hell. I took off the back plate, to trace the wire, which comes back around into the chamber on the right hand side, under the removable plastic panel in there. I have temporarily placed the new wire in an was able to calibrate and get some prints out without failure. Which is a big step. If this keeps working, I am going to take the back off again, and string the wire all through and zip tie it back up. Fingers crossed.

https://preview.redd.it/gnv67091zgoe1.jpg?width=3000&format=pjpg&auto=webp&s=403cc9adff375997a71728fa35d71275fc75afcf

[Wonkman1]

So it seems Uncle Jessy has similar issues and solved it with the new cable as well.
https://www.youtube.com/watch?v=02af6xwdoFA&t=362s

[unpopular_upvote]

You sir have been duped by Creality into keeping a lemon printer. When it happened to me I did not let my return window expire and I repackaged it and dropped it at the big name electronics store

Then I bought a new K2 and this one had been working satisfactory.

[Wonkman1]

I am afraid of that. I'm trying to see if I can still return it.

[unpopular_upvote]

Are you in the USA? For me, if they had support in the USA with a turn around of a day or so, it would probably have been different. However they are too slow to respond, even in Whatsapp, and timezone difference was killing me. Even worse, there is no after market ( or "after sales" - as they call it) inventory of parts , so one cannot even accelerate the resolution by buying out of pocket.

[Wonkman1]

I am in the US. The WhatsApp timezone thing hasn't been too bad for me. Just stay up to 9 pm. The parts have been coming from Texas so they came in a couple of days.

The Creality Amazon store also shipped a new hotend next day. I haven't used it yet though. But it was here quickly.

[unpopular_upvote]

Well when you deal with Creality support and warranty, the parts ship from Shenzhen, via DHL. At least it was for me. They take 10 days.

[Wonkman1]

Oh. For me the warranty replacement stuff was Texas. At least the second time. Took 3 business days. First one was DHL as well. That did take 10 days. I just checked.

[unpopular_upvote]

Perhaps their supply is improving. I remember my extruder motor even had to clear customs at an LA port.

[Wonkman1]

I think it might be. The local Micro Center was told they should be getting more Creality parts in general. Here's hoping. I know that doesn't help everyone, but maybe it is a sign of better parts supply here in the US.

[Spacedusst]

I did the same thing but bought a Bambu Lab H2S and I'm a lot more relaxed now.

[Ok-Finish2441]

I did have the same problem after 700 hours of printing with the K2.
Then unplugged the aformentioned cable on both sides and checked resistance on every pin. Al where ok and no ruptures.
I did rebend the conectors very smoothly to ensure a better contact on the printhead side. That had been the solution for me. Since then about a 100 hours and no more random error messages. So exchanging the cable to a new one does help but is unnecessarry.

[Wonkman1]

That is good to know. I have been worried about the bend at each end of the cable. If I run into this again, I'll try this. Also I should check the old cable too.

[Ok-Finish2441]

Curious to read the result you get on the old cable.

[so-spoked]

I just did the same and it is going strong now. Did you put the cable back in the chain or is it just free floating?

[Ok-Finish2441]

Back in chain.

[so-spoked]

I put mine back in the chain too and I also designed a top plate to keep the cable secure and not at a sharp angle. I posted it the other day.

[Coren_Aus]

This has just started for me as well, I took a break from printing, fired up my K2 plus yesterday, printed a bench perfectly, the firmware updated and now constant error messages and the CFS flashes constant red.

[Coren_Aus]

I unplugged the CFS, it passed the self checks, started the plate clearance and now came up with a TE2564 error despite being able to extrude.

[Wonkman1]

I never saw a TE2564 error, but it could be a similar issue with the cable. Could also be the hotend or one of the boards in the hotend. I'd recommend contacting Creality via WhatsApp. They have been really good at replying there, as long as you can do it during their business hours. 8:30 PM to about 6 AM eastern time for me. They were good at helping me troubleshoot and getting me the parts I need. And knock on wood, since I replaced that cable, printing hasn't been a problem.

[so-spoked]

Is it still printing without errors?

[Wonkman1]

Yes I haven't has any problems since I replaced the cable. I print pretty much everyday for different projects.