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My '96 Chevy Cavalier Z24 had this same code pop up into the cars computer. I took it to a place to have the code pulled. I then called a repair shop and asked them what the code ment, and was told it could be one or all of the following problems.
1. fuel system(ie. fuel pump, fuel filter...depends on what the car is doing) 2. oxygen sensor 3. catalytic converter
All that the code "Catalyst efficency threshold low" means is that something is starting to plug up in the exhaust system. Try taking your car/truck to a well known and well trusted mechanic and have them tell you more as to what is wrong. Some places have better equipment than others.....believe me...I know this one....been there...done that one.
What else can I help you with?
What is the threshold for low barometric pressure?
The threshold for low barometric pressure is typically considered to be below 29.92 inches of mercury (inHg) or 1013.25 millibars (mb).
Which one is good politician having low efficency or bad politician having great efficency?
Good Politician having low efficiency is better because atleast something positive will come out however slowly but Bad Politician With Great Efficiency is a disaster because he/she will lead the progress in negative direction & that too with full efficiency. :)
Which The MOS threshold corresponds to the number of the existing PRMS?
Low
Explain the difference between high and low pain threshold during labor?
Well if you have a 'high pain threshold' you seem to feel a lot more pain then you do if you have a 'low pain treshol'.
What cause a P420 code on a 2000 Monte SS?
PO420 is catalystis efficency low bank 1. That is referring to the catalytic convertor bank 1.
How do hybrid cars affect the environment?
they don't that's the whole idea how can u say dat..they don't..! They do,but not much they use petrol in low efficency.
What does a low pain threshold mean?
it means your body sends more pain then needed towards places that have been punched, kicked ect then someone with regular pain threshold. as pain is just a message from your body saying to stop but if you have a low pain threshold your body sends too much pain.
Do catalyst allow chemical reaction to take place at zero degree celsius?
Some catalysts can increase the rate of a chemical reaction at zero degrees Celsius, but not all catalysts are effective at such low temperatures. The effectiveness of a catalyst at low temperatures depends on the specific reaction and the nature of the catalyst.
Why can a catalyst speed up a reaction even at low temperature?
Because catalyst will reduce the activation energy of the reaction, thereby the speed of the reaction increases.
How do you fix a Low Catalyst Effiency Bank 1 code P0420 on a 2001 Toyota Camry?
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
2001 volkswagen jetta GLS 1.8T DTC code shows Catalyst efficiency low on threshold does anyone know what could be wrong cause volkswagen dealer told me that the catalyst converter needs to be replaced?
replace o2 sensor behind cat.converter first, you probably do need a catalyst, the emission warranty for that is 8 years or 80,000 miles minimum and may be longer on some models so if you have less than 80,000 miles and the date car was originally purchased on is less than 8 years ago the dealer will replace it at no cost to you.
What is a molecule of low molecular weight capable of reacting with identical or different molecules of low molecular weight to form a polymer?
This is a catalyst.
