FAULT code on my 2007 S3

s900029

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[h=3]18609/P2177/008567 - Bank 1; System Too Lean off Idle: Upper Limit Exceeded[/h]
 
I think I have seen this on another thread but I cant find it. Turned out to be a dirty fuel filter..
 
I had this on my s3 for over a month, changed the plugs, new silicone hose from my throttle body to induction kit, checked for vac leaks.... no problems.

Replace the fuel filter, mine was full of water and gunked up.

once replaced, turn the light out.

Do you notice any lack of power in the higher rev range?

If you Check Engine Light isnt on, it will soon come on.

Change the filter :)

Louis
 

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