M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Help! keep getting too lean codes 2091,0749,2095,0745

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Old Nov 19, 2011 | 09:10 PM
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yister's Avatar
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From: SoCal
Ml350
Help! keep getting too lean codes 2091,0749,2095,0745

Already replaced MAF and then O2 sensor. What gives?
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Old Oct 14, 2016 | 09:16 AM
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c300
Did you ever figure out what the cause was? Im getting the same codes on mines
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Old Oct 14, 2016 | 09:57 AM
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c300
nevermind i figured out that the air cleaner cover was not on all the way and unfiltered air was getting in
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Old Nov 26, 2019 | 06:47 PM
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Akbar Service's Avatar
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2007 S600
That will not set a fault code....We have had several MBZ's - with 272/273 Engines - that have been driven for months with the air filter housing totally removed (missing) and st no fault codes....

Last edited by Akbar Service; Nov 26, 2019 at 06:55 PM.
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