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Audi codes P0170 and P0173

Tiny
ERICL503
  • MEMBER
  • AUDI
Can anyone tell me what a "fuel trim malfunction' is?
Wednesday, June 28th, 2006 AT 12:22 PM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
That is a mixture adjustment problem. Have the Oxygen sensors ever been replaced?
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Thursday, November 30th, 2006 AT 6:10 PM
Tiny
ERICL503
  • MEMBER
  • 2 POSTS
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.
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Friday, December 1st, 2006 AT 12:38 PM

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