2001 Toyota Tundra Code P0420

Top Causes of P0420 in the Toyota Solara.

2001 toyota tundra code p0420. MAF sensor dirty causing wrong cold engine idle airgas ratio may be the origin of problem so cleaning it is a bonus. Gas Blend Outside Temperature or Bad Gas One reason for the P0420 code can be when the gas stations switch over to winter blend gas. As the code description implies the Toyota P0420 code means that the vehicles control module has detected that the three-way catalytic converter is not working properly is not as efficient as the factory is expecting.

In this video we work on solving a P0420 diagnostic code being thrown in a 1999 Toyota Tacoma. P0420 Toyota Description. Joined Feb 12 2002.

The O2 sensor still moves up and down when driving but is stable at about 07 volts when at idle. I had the same issue on an 2004 OEM Toyota cats are the best and most expensive although the second choice would be Magnaflow which seem to work for most peepsstay away from the Universal types cats that are welded on they creat more problems. If you search the GEN1 forum under cats you will find a lot of infos on the subject.

For the next person finding this the sensor gasket is available separately from the dealer Toyota part number 86466-20020-83. A very common trouble code with the Toyota Tundrais the P0446 code. A three way catalyst converter Manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.

Most of the time it indicates that the catalytic converter is not working how it should. As the code description implies the P0420 code means that the vehicles control module has detected that the three-way catalytic converter is not working properly is not as efficient as the factory is expecting. Bank on is the same side of the engine as the 1 cylinder which is the drive side converter.

P0446Indicates that there is a fault in the evaporative emission control system. It doesnt matter which model you have this OBDII code has the same meaning for all of them. If you are getting a P0420 error code and only the P0420 repeatedly then you likely have one of the following problems.