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    Thread: 2009 aveo 420 code

    1. 04-04-2014, 04:37 PM #1
      tacomafitch
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      2009 aveo 420 code

      My 2009 with 182K miles came up with a 420 code earlier this week but i reset with the scan guage now twice today. Hopefully not the cat. Any words of encouragement ?


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    2. 04-04-2014, 07:09 PM #2
      xintersecty
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      Gloom and Doom: P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1)

      Just kidding just make sure that it does not come back otherwise that might mean replacing the Cat converter.
      Please do not power off, firmware update pending.....
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    3. 04-06-2014, 02:04 AM #3
      Chevy Customer Svc
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      Hi tacomafitch,

      I'm sorry to hear of this concern. Please let us know if you would like any extra assistance, we will be glad to look further into this for you. Please send us a private message with referencing this thread if any extra help is wanted. Thank you.

      Kristen A.
      Chevrolet Customer Care


      Don't forget to check out my.chevrolet.com link and take advantage of a wealth of vehicle information!

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