Just got these coes today.

Did some searching and youtubing and seems to point to a dirty MAF. Coincidentally I just had a coolant refresh done at my local dealer and I'm wondering if they left something loose. There's a youtube video showing a loose fitting on the back of the air box on an E class that caused codes to pop. Next step is to take my airbox off and inspect connections and tubes. Then look at the MAF connections.

Anyone else gone through this already?

Thanks, Leo

Hi, I was wondering if you could report back what the issue was?

QUOTE=bajaleo;8273068]Just got these coes today.

Did some searching and youtubing and seems to point to a dirty MAF. Coincidentally I just had a coolant refresh done at my local dealer and I'm wondering if they left something loose. There's a youtube video showing a loose fitting on the back of the air box on an E class that caused codes to pop. Next step is to take my airbox off and inspect connections and tubes. Then look at the MAF connections.

Anyone else gone through this already?

Thanks, Leo[/QUOTE]

[QUOTE]

All my codes were related to my intake manifold failing. It's mostly made of magnesium and if your car has the M156 engine then your intake manifold will likely need service. On youtube there's a guy named Tasos Moschatos who has several videos showing how to do the repair. There's a throttle body plate that is the main culprit and you can find an aluminum replacement part online which is what I did. You have to remove the intake but it's not that hard if you have any wrenching skills. All my codes went away after this.

Good luck.

[QUOTE=bajaleo;9128117]Yeah I have an 09 E63. I was afraid it might be the infamous fuel injectors staying open. I’m going to try to make an appointment with a Mercedes specialty shop tomorrow and see what conclusion they come to. Thanks for getting back to me!