Machine runs slow after a few minutes. Engine speed requested is 2000 and when cold is ok and after a few minutes wanders from 900-1200 RPM. Service mode almost all data parameters are missing like hydraulic temp, pilot pressure, engine coolant temp, air intake temp, ECT… Does anyone have experience with this problem? I suspect a communication problem with the CAN BUS. All four controllers test good.
Serial number with model in the image.