EXTRUDER ERROR

Hello, after two years of trouble-free printing, I have started experiencing the same issue on 2T Prusa XL. I first noticed extruder lights flickering, after which the extruder motor stopped, the printer restarted, and eventually entered a critical error state, causing the print to fail. As an initial troubleshooting step, I cleaned both the male and female contacts with isopropyl alcohol and completely removed the dwarf cable cover. The lights stopped flickering during the first long print, and I'm hoping the print will finish successfully. So far, everything seems stable, but I'm not sure whether the fix is permanent or how long it will last. I'll continue monitoring the printer and report back if the issue reappears. It would also be helpful to add a maintenance notification reminding users to clean the toolhead contacts if the printer has not been used for an extended period.

Additionally, I would appreciate an option to resume printing after this type of interruption. At the moment, the safety feature seems overly sensitive. While I understand the intention behind it, a brief loss of contact immediately results in a failed print, which can ruin many otherwise successful long-duration prints. In my case, cleaning the contacts appears to have resolved the issue for now, but it would be nice if the printer could recover more gracefully from temporary contact interruptions.

všetky motory všetkých extruderov sa postupne pokazia aj všetky káble sa zrazu začali uvolňovať.

I finally cleaned all connectors at both ends of the cables. Now everything works.

I have removed the new cable cover; I have cleaned the contacts on #2 nozzle; and it still fails after 2-3 layers of printing. Does this mean the wire to the motor is broken or the connector is bad?

I had the same problem for a few weeks now and always used the other working 4 printheads. I already replaced the cable- and dwarf covers but had no luck and actually don't wanted to invest more money for new cables at the time, so i googled a bit.
What fixed the error for me was fairly simple and i found it on the YT channel "Ro3Deee". He shut down the printer, disconnected the cable from the printhead, sprayed some pure alcohol or isoprop in the connector, cleaned the contact pins with a little brush and let it all dry. After reconnecting the printhead and retrying everything works fine and it also did for me.
My printhead always jammed after 2 to 5 minutes of printing with the error and now he's able to print nonstop hours again.
Hope that helps someone out there, before investing in replacement parts :)