how to fix code p0420 p0430 2004 2017 toyota sienna code p0420 p0430 fixed catalytic converter bank2

2004 17 but this repair applies for any year any model any manufacture not only toyota but any toyota sienna code p0420 p0430 fixed catalytic converter bank2 how to fix code p0420 p0430 bank 2 but first make sure catalytic converter is not clogged by doing a back pressure test.