Audi codes P0170 and P0173

EricL503 · Posted at Wed Jun 28, 2006 9:22 am

Can anyone tell me what a "fuel trim malfunction' is?

2CarPro Jack · Posted at Thu Nov 30, 2006 4:10 pm

That is a mixture adjustment problem. Have the Oxygen sensors ever been replaced?

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EricL503 · Posted at Fri Dec 01, 2006 10:38 am

The O2sensors have not been changed to my knowledge. The light has been off for a while now. I ran a couple of bottles of fuel system cleaner through and that seemed to help a number of nagging annoyances.