Thread: QG18DE Sentra 2003 GXE

Check engine light problem I got my ECU checked and the guy said that I have a problem with my Catalytic converter ( low bank 1) it says I got 2 catalytic converter installed right? front and rear? please help. I'm a bit confused

What codes did the car throw?

All I remember was Catalytic converter Low bank 1

2 of these codes came up: I need to get it checked again to make sure.

0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)

and also the mechanic said I need to replace my catalytic converters, he also said not just one but both of them, (front and rear)

are these stuffs compatible to my GXE? Or are these the stuffs that I need?

Eastern Rear Catalytic Converter

Eastern Front Catalytic Converter Direct OE replacement