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2002 Honda Civic Question: code 420

 

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Visitor, 1.7L 4 Cylinder, Tomball, TX, June 04, 2010, 14:28

check engine stays permanant and the code is 420

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, June 04, 2010, 16:18
     Master

    Here is a ton of great info on the P0420 trouble code: http://repairpal.com/OBD-II-Code-P0420

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