Code P0420
Rick34
07-04-2006, 06:41 PM
:smooch: My 2000 Miata has 27000 miles. I got the code P0420 Federal System below threshold. Does this mean I will need a new cat or could it be the O2 sensor?
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Code P0420Rick34 07-04-2006, 06:41 PM :smooch: My 2000 Miata has 27000 miles. I got the code P0420 Federal System below threshold. Does this mean I will need a new cat or could it be the O2 sensor? Automotive Network, Inc., Copyright ©2026
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