just checked codes, p0507, p0431, p0421 any ideas?
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i looked up what they mean i was wondering how to fix it...
many of the posts people had many more codes than this and i was wondering if these three together could be related to any one problem?
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jeffreytumbo
Audi 90 / 80 / Coupe quattro / Cabriolet
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06-18-2003 11:59 AM