420 code won’t stop

  1. Chick
    Thread

    P0420 code that won’t quit

    I am stumped. I can’t get my 2007 Prius (234015 miles) through emissions because i throw a 420 every 5-95 miles. Seems almost spiteful the way my...
    Thread by: Chick, Aug 26, 2022, 20 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
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