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2002 Nissan Altima 2.5L, how to fix trouble code P0420?

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2002 Nissan Altima 2.5L, how to fix trouble code P0420?

Vehicle: 2002 Nissan Altima 2.5L

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Best answer

P0420 NISSAN - Catalyst System Efficiency Below Threshold Bank 1

most likely the catalytic converter

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P0420 2002 NISSAN ALTIMA SEDAN - Catalyst System Efficiency Below Threshold Bank 1
Read more: https://www.autocodes.com/p0420_2002_nissan_altima_sedan.html

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