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This code means the catalytic converter needs to be replaced.
Problem could also be oxygen sensor, air leak such as stuck open pcv valve, leaking hose going to pcv, ect. Onther possible option is a poor aftermarket converter.
P0430 Catalyst Efficiency Below Normal (Bank 2)
which or where is bank 2 located v6
The check engine light would still be on if you ran a straight pipe.
can i return a catalyc converter or how is it determined if it is faulty?