Quote:
Originally Posted by ainarssems
I am sorry, I cannot agree- post catalyst O2 sensor only monitors catalyst and would not throw this code but another for catalyst not functioning properly.
This could be pre cat O2 sensor, air/vacuum leak, dirty/faulty injector or cambelt timing off.
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My guy, no need to be sorry, different opinions. I had the same code on my S8, I cleared the code, but it wouldn't stay off. I replaced a post-catalyst O2 sensor, and that sorted things out.