It is a DTC-generated OBD-II code that indicates to us that one or more than one engine cylinder is misfiring..
Category: Trouble Code
What Does the P0430 Code Mean?
The electronic control unit displays this error code when it detects that the catalytic converter is performing low than the required threshold..
P0420 Code: Catalyst System Efficiency below Threshold (Bank 1)
P0420 error code indicates that there are faults in the catalytic convertor of the vehicle. The primary function of the catalytic converter is to breakdown harmful polluting elements such as carbon monoxide, hydrocarbons, and nitrous oxide during the combustion cycle.