Servus, have the problem with our Ford Transit Custom 2.2 TDCI that the MKL lights up. I read out the error with our Hella Gutmann device: 2 Errors: Glow plug Cylinder 3 particle filters full wanted now regeneria, for which the tester wants 80°C temperature. However, this temperature does not get despite highway full gas. The pointer in the cluster instrument had its 90°C on the highway. When standing at the red traffic light the termperature then went down again to approx. 60°C. What is with me k aputt, resp. what is to be done? Is it the thermostat, whereby I think the control the pointer in the instrument cluster, therefore it seems ok. My mistake is apparently the one defective temperature sensor that reports a wrong value to the diagnostic device.