Can anyone tell me what a "fuel trim malfunction' is?
Jun 28, 2006 at 12:22 PM
Audi codes P0170 and P0173
AUDI
ERICL503
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That is a mixture adjustment problem. Have the Oxygen sensors ever been replaced?
Nov 30, 2006 at 6:10 PM
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.
Dec 1, 2006 at 12:38 PM
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