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  • Users: Lola09
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  1. L

    P0420 Code Help

    I have that wonderful P0420 code on my 2009 WRX. We have been told it could be one of two things, either the rear O2 sensor or the cats. We replaced rear O2 sensor cleared the code, then one day later the code popped up again. So my assumption is I need new cats. However there is something that...
  2. L

    Hi Everyone

    Hey guys! Just recently joined the Facebook page, then I found out you also had a forum so I joined! I have a 2009 WRX black sedan. Quick question, I tried viewing some threads in the CEL section and I keep getting a server error. The one thread in particular I wanted to view was the P0420...
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