The code is saying that likely your cat converter is failed/failing and that you need to replace it.
Its a slim chance that its just the rear o2 being faulty, but very unlikely.
P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1)
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10-29-2012
The code is saying that likely your cat converter is failed/failing and that you need to replace it.
Its a slim chance that its just the rear o2 being faulty, but very unlikely.
P0420 Error Code: Catalyst System Efficiency Below Threshold (Bank 1)
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