Sensor Problems
I am also having the same problem with my audi. Recently my check engine light has started comming on and off. I went to my audi dealership recently and they told me that the error codes also were O2 Sensor, Cat Convertor, and also Purge Valve. I am curious about this one because maybe it is just a leak or something causing error codes? My car was lowerd before I bought it and I bottom out ALL the time, so maybe something broke. Any help on this one is appreciated. I really don't feel like changing all this stuff if it's not necessary. Audi gave me estimate of over $2600 to replace this stuff.
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