Check for exhaust leaks, check O2 sensor functionality, replace catalyst.
It means that the catalytic converter is not performing to specifications and should be replaced.
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)
The normal engine operating temperature, for a 3306 Caterpillar diesel engine, is 180 degrees. The engine should not be operated at temperatures above 200 degrees.
It should not
Try this website for code descriptions http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm PO433 is "Heated Catalyst Efficiency Below Threshold (Bank 2)"
"PO420" is an error code the car delivers to let the driver know that the Catalyst system Efficiency is below the threshold. If this error occurs, the car should be taken to a certified mechanic to resolve the issue.
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P0420 = 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.
This code is generic and is the same on all vehicles. P0420 = 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
This is the catalyst heat sensor light. It comes on when the engine is started and it should then go out. If it doesn't, assume the catalyst has failed. If the light comes on while driving it means your catalyst has failed. The catalyst usually fails if the car misfires and sends some unburnt fuel down the exhaust.
There should be a sticker that says Catalyst that you will see as soon as you open the hood that will have the year, engine size and recommended oil weight on it.
i use the catalyst as an enzyme. you should too. -peyton manning.