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New MIL.... scan with VAG-Com reveals

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Old 08-05-2007, 09:48 AM
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Default New MIL.... scan with VAG-Com reveals
17544 - Fuel Trim: Bank 1 (add) : System too Lean
P1136 - 35-00

17546 - Fuel Trim: Bank 2 (add) : System too Lean
P1138 - 35-00

Happened twice... friday moving at 25 mph and saturday in bumper to bumper <15mph

Comments please??????
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Old 08-05-2007, 12:48 PM
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I've seen this mean time for new MAF on other cars (Merc CL55 AMG, my last ride.)
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Old 08-05-2007, 05:26 PM
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Maybe there is a little un-metered air??? Check the MAF reading at idle???
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Old 08-05-2007, 05:42 PM
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My wife's C-class had same message, was the MAF too.
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Old 08-05-2007, 06:56 PM
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Default Most likely is a vacuum leak. Hitach MAF's have higher reliability than Bosch
but I have seen Hitachis go bad. What is you MAF reading at idle , 2500 no load, and at WOT 4500RPM in 3/4 gear?
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Old 08-05-2007, 07:36 PM
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Default I will have to log it... but the MIL happens at low <1500 RPM
What's the impact of running with this "error" for a few weeks? It's a momentary thing - I'm clearing the code as it happens and I'm getting it back once per day.
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Old 08-06-2007, 06:47 AM
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Default Probably air leak. MAF shift usually results in load errors, long term fuel errors
and some drivability issues.
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Old 08-06-2007, 08:54 AM
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2nd this. a friend had this same code on his 1.8T passat. turned out to be a cracked vacuum hose.
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Old 08-06-2007, 05:03 PM
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any idea where to start the search?
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Old 08-06-2007, 07:30 PM
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Default my friend could hear the leak in his - open the hood have someone else hit the gas
and listen for it. If that doesnt work than you'll probably have to ask someone smarter than me.
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