P0430 Lexus is300

Question

Hi I am just wondering, do I need to replace the front or rear catalytic converter with this error. The mechanic determined it was indeed the catalytic and not the o2 sensors.

Answer 1

P0430 Catalytic below threshold Bank 2

The catalytic in the front is known as the warm up catalytic convertor. that is considered as Bank 1 the the one on the rear is Bank 2 that is the main catalytic. And don't be suprised if you have to do the front