Pre Cat O2 sensor going bad. Yesterday for the first time it triggered a CEL going 80mph at WOT.
11-21-2008, 03:52 AM
#11
AudiWorld Super User
save money by getting the Bosch generic
and attach your old connector to the new sensor. Just be careful, depending on which year and model you have, the part numbers they suggest are wrong. I struggled for a long time with my car. The book said that the front and back sensor were different numbers but in the end they were the same. I just can't remember if I ended up with 2 fronts or rears.
11-21-2008, 06:19 AM
#14
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I did a 3rd gear wot run up to 6500rpm and the lambda values were in the range of 0.735
and the spec value was the same. I never got any lean codes as of yet. Only the intermittent oxygen sensor code.
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