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2005 Acura RSX Question: Check engine light came on. Diagnostic code P0420. Failed emissions.

 

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rsx05, La Vergne, TN, May 27, 2011, 10:56
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Is this a sensor or does the cat. converter need to be replaced altogether? Check engine light came on, code P0420, failed emissions inspection.

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  • Answer #1

    May 27, 2011, 11:46
     Master

    In most cases when code p0420 sets the catalytic converter requires replacement. Please use the RepairPal estimator to find out what the cost should be. Here is a link - https://repairpal.com/estimator?car_type_id=4292

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