Can please anyone tell me what these codes mean. They are combined with PO171 and PO174?
Are they related, maybe causing them?
Thanks

 

The first 2 trouble codes would most likelylead to the MAF sensor either being cleaned or replaced. The P2091 & P2094 may also be related.
P0171 = system too lean bank 1
P0174 = system too lean bank 2
P2091 = B camshaft position actuator control circuit high bank 1
P2094= B camshaft position actuator control circuit high bank 2
On the other MB forums there is mention of "leaking cam sensors" that may trip fault codes on the M271 & M111 engines.
If yourMB isa 2006, it may be covered under warranty.Good luck!

 

MAF was just replaced but the codes came back. Car has no warranty;I have to find solution.So you think that cam sensors might be a problem? How do I check that?
Thanks

 

Check the wire connection at the cam sensor, disconnect and see if there is any oil in the
connection or if any oil has run down the wires to the O2 sensors.
This photois from another thread on another forum. Hope this helps you out on where to look.
Circled in orange are the cam sensors.

 

I did clean them with MAf sensor cleaner; no result. Do you think that fuel injectors can be dirty just enough to cause this, and let enough fule through not to cause misfire?
Thanks