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Thread: ECU codes.

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    ECU codes.

    I have a 2007 RS4 Avant with a complete miltek exhaust system, including 100 cell racing cats. I brought the car like this. It has all of the correct engine mapping within the ECU's, as I have had this re-mapped myself. I have had problems in the past with fault codes pointing to lambda sensors, which turned out to be the inlet manifold. However, I am now getting the emission warning light illuminating at various times. The fault codes I am getting are, P2097, post catalyst fuel trim system to rich, bank 1, and on separate occasions, P2098, post catalyst fuel trim system to lean bank 2. I know this is a long shot, but can anyone advise. Thanks.

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    on a v8 bank1 is where cylinder 1 is so looking front front bank 1 on the left so bank 2 on the right yes?????? this not a statement but a question please

 

 

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