did a scan on my 2000 Nissan Maxima SE 3.0L, And the only code that appeared is P0430 Bank 2. what would i have to do to fix this issue. would I have to change the cat that's in front of the radiator and the o2 sensor as well for bank 2 or should I replace all the 02 at once to avoid issues later down the road. the car has 131,000 miles as i speak.
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