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p0420

  1. p0420

    2G Dodge Ram Performance Talk
    I had a 1997 Dodge Ram 1500 2wd extended cab short bed with the 5.9. I was on a trip and got gas and shortly after filling up the check engine light came on (within 6 miles) and the truck is fully warmed up. I pulled over and scanned it for codes and it was a P0420 which means (Catalyst System...
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