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Hey I was wondering if anyone had any clue on why I keep getting the CEL for P0299 for my 2015 Mercedes CLA 45 AMG. It goes on and off randomly. I had the Turbo and lines pressure tested and they came out okay. I even had the turbo boost control valve replaced. The car would go into limp mode or lose a decent amount of power whenever the light comes on. Anyone got any suggestions on what I should be looking at?