Dulama

Good morning guys

I have 2015 mercedes c300 2.0T w205
previously i had issue with the timing turned out the camshaft were bad so i replaced them and the car worked just fine later on i got P052E i changed the valve completely i bought the part from the dealer and now I'm having P04DB79 so after diagnosed find out maybe the valve is bad that we replaced so i did swapped it thru the warranty and nothing this code keep coming back any help i appreciated

Cosworth2000

Send the car back to Mercedes as they will have e live scan it.

Dulama

i did the job by my self and mercedes won't covered

Alexey Mukhin

any updates? I'm facing the same issue on a 2018 CLA 250. Had the p052, changed the pcv and now ai have a p04db. The new code is also stuck permanent position so clearing it doesn't help.

Dulama

The problem on mine was on the pcv was there’s connector with 2 wires one of the wire were loose i rewired and cleaned the connector and the codes went away