P0420 Infiniti - cost to repair

Question

had muffler leak fixed that and is still reading p0420 and po158

Answer 1

P0420 most likely the catalytic converter is bad which is very expensive with the OEM parts over $1000 or so

P0158 is for bank 2 sensor 2 oxygen sensor with a new dealer part might be $300 or so

 

not sure what model Infiniti you have Q45 or QX4