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  1. Bryan Holloway
    Media

    Diagnosing P0420

    Uploaded by: Bryan Holloway, Jun 23, 2016, 0 comments, in category: Technical Prius Videos
  2. Bryan Holloway
    Post

    P0420 Diagnosis with Freeze Frame Data

    Here is a test I found inside of the computer. It says its for the catalyst. And status is LOW. Does this pin the cat to needing a replacement?
    Post by: Bryan Holloway, Mar 9, 2016 in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
  3. Bryan Holloway
    Post

    P0420 Diagnosis with Freeze Frame Data

    Is there any way to test the cat or know if its bad? No way to judge from the freeze frame data about the cat temperatures? Also I found under...
    Post by: Bryan Holloway, Feb 11, 2016 in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
  4. Bryan Holloway
    Thread

    P0420 Diagnosis with Freeze Frame Data

    I have a 2006 Prius with a little over 200K miles. I get a P0420, after an ECM reset, after about 50-100 miles of driving, and that seems...
    Thread by: Bryan Holloway, Feb 10, 2016, 4 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
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