Mercedes E-Class E220 CDI Intake Air Leak 

did you block of the intake system near the intake manifold ? am curious as have same engine and same fault , code P228100 = Leak between MAF sensor and Throttle body, so will be looking to do same test as ive done a visual inspection and cant see anything

Hello I have code p0101 I have Change the maf sensor and air filter. Checked the turbo hoses. The code p0101 is after delet and new start from car Motor check on. What can be else wrong?

Thanks for this. Was there no better place to connect smoke machine, best direct at turbo?

This hose is so common, cannot understand why you bothered to remove intake from turbo, and connect fumes supply. I have changed this hose twice on my merc already. You can hear it blowing miles away.

I have an error message for an inlet air leak. What are the alternative points for introducing the smoke on the E220