I just fixed the issue and Smithy was right! It was the cable in my case. The 2 wires(of 4 total of heater bed cable) that have the rubber wrap had a break in my case. The wire touched the other, but when moving this resulted in the error. I found out by checking the wires with a multi meter. For your case Standard drift if you have checked the Ultimaker support and followed the er02 advice by switching nozzle and heater bed cable to determine what is causing the error. In my case it had to be the cable, but could not believe this because the error was not happening when pulling the cables as I first suggested. You can order a new one at Makerpoint; 210000000681 Ultimaker Heated Bed Cable 1,0 € 13,00 21% € 13,00 Or weld it like I did and it works! Best regards