In plain English it means that your catalytic converter is failing.
Catalyst system efficiency below threshold, bank 1. Catalyst system efficiency below threshold, bank 1.
Means you need a catylitic converter.
Catalyst efficiency below threshold, your catalytic converter may have failed.Catalyst efficiency below threshold, your catalytic converter may have failed.
Trouble code P0420 means: Catalyst Efficiency Below Threshold (Bank 1)
This code is for the catalyst system efficiency is below threshold
Trouble code P0420 means: Catalyst Efficiency Below Threshold (Bank 1)
Trouble code P0420 means: Catalyst Efficiency Below Threshold (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
Catalyst System Efficiency Below Threshold (Bank 2)
Trouble code P0432 means:Main catalyst efficiency below threshold
It's Catalyst system efficiency below threshold
It means that the catalytic converter is not working properly.