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)
Trouble code P0432 means:Main catalyst efficiency below threshold
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
Catalyst System Efficiency Below Threshold (Bank 2)
catalyst efficiency below threshold (bank 1)
It's Catalyst system efficiency below threshold