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It means the convertor is not acting well enough to remove noxious gases.
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∙ 10y ago
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What does the code P0420 mean in a 2001 Dodge Stratus with 2.4 engine?
Catalyst efficiency below threshold, your catalytic converter may have failed.Catalyst efficiency below threshold, your catalytic converter may have failed.
Code of P0420 catalyst efficiency below threshold What does this mean?
It means that the catalytic converter is not working properly.
What does this code mean Catalyst Below Threshold Bank 1?
It means that the catalytic converter is not performing to specifications and should be replaced.
What does catalyst efficiency below threshold mean in a 2000 Honda CRV?
In plain English it means that your catalytic converter is failing.
What does code PO420 mean for chevy S10 4 cylinder?
Catalyst efficiency below threshold. (The catalytic converter may be failing.)
What does code P0420 catalytic converter mean on 1999 Honda civic?
Trouble code P0420 means: Catalyst Efficiency Below Threshold (Bank 1)
What does catalyst efficiency below threshold Bank 1 mean?
The catalytic converter for bank one is not working properly. Either a exhaust leak, a failed O2 sensor, or a failed cat.
What does it mean when my Ford expedition check engine light code p0430 comes on?
from what i have read and can find out it is catalyst system below threshold bank 2.it is a catalytic converter problem some say it could be an oxygen sensor. i have the same code on my expedition.i haven't figured out if it's the converter yet
What does the code P0420 mean on a 2000 dodge avenger?
Catalytic converter failure.Catalytic converter failure.
What does p0420 mean on your dodge 2006 5.7 truck mean?
Catalyst efficiency failure.The catalytic converter has failed.Catalyst efficiency failure.The catalytic converter has failed.
What does P0420 bank 1 code mean?
Code P0420 means "Catalyst System Efficency Below Threshold (Bank 1)" P0420 is actually Catalyst System Efficiency Below ThresholdCatalyst System Efficiency Below Threshold. Bank 1 is the side of the engine with cylinder #1. This code means that the catalytic converter is not cleaning the exhaust properly or the oxygen sensors are sending false info to the computer.
What does code p0420 mean?
Code P0420 means "Catalyst System Efficency Below Threshold (Bank 1)" P0420 is actually Catalyst System Efficiency Below ThresholdCatalyst System Efficiency Below Threshold. This means that the secondary O2 sensor detects that the catalytic converter isn't working as efficiently as it should. This engine code can be triggered by any one of the following:1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.2.) The secondary O2 sensor is malfunctioning.3.) There is an exhaust leak.4.) The computer unit is faulty.Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
