So, I'm getting a P0068 Code with a Check Engine light on my 2014 C250. When I pulled the air box out of the way to check the sensor, I found the intake hose has oil in it. Like, alot. Moved to the other side of the engine compartment and pulled the outlet hose off the turbo, yep oil present there too.

I think this excess oil is clogging the MAF sensor. Should I assume the seal in the turbo is bad? Replace entire turbo or is the seal something I can replace to fix this issue?

 

Did you have an oil change or add oil recently? It could be someone overfilled the engine oil. Just a guess.

 

Yea, fair guess. No, I haven't had an oil change recently. In fact, the car only has 70k miles on it, not really very high. Just seems odd to me that the turbo seal has failed.