BagratAtalyants

Hi guys,I have a problem with my C300 W205 in turbocharger
I have got P0299 error code and no boost in turbocharger,dealer service said that i should replace A0101531328 part(vacuum converter)so i replaced it but there is no any changes.
Do you have any ideas?

dagger22

Do you still have warranty with your dealership? if no, best to get a shop to check on your turbo and actuator, check for boost leaks, any worn/broken vacuum hoses, and check the diverter valve (DV) as well.
P0299 indicates underboost, basically your sensor is reading lower boost compared to the ecu target boost level.