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catalytic converter

  1. 2005 - 2010 Odyssey
    I have 2009 Odyssey with 140,000 miles. Check engine light came on. Dealer says I need a catalytic converter. Seems odd to me as the 3 previous Chrysler mini vans I had and drove to 250,000+ miles never needed to replace the cat. converter. Any thoughts? Is this normal? Also, my Honda dealer...