Hello together! With my new OBD diagnostic device “Autoaid Pro” I was able to eliminate three out of four faults and the engine malfunction lamp by replacing the charging pressure sensor. Now I only have this one here, which comes again after every deletion:P200A21 — Suction tube/loading valve B1 Lower signal amplitude too small– The engine malfunction lamp in the display is left out. At the driving behavior of the vehicle you don’t notice anything. No jerking, all normal, the Benz drives as always. You only see errors when you read out the engine error memory. What could you do? Greeting Hans