2001 Toyota Tundra Code P0420

Catalyst System Efficiency Below Threshold.

2001 toyota tundra code p0420. A very common trouble code with the Toyota Tundrais the P0446 code. For the next person finding this the sensor gasket is available separately from the dealer Toyota part number 86466-20020-83. The cats and airfuel sensors still have 200k miles on them so I expect to have.

If you are getting a P0420 error code and only the P0420 repeatedly then you likely have one of the following problems. 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. The code is P0420 Repair information P0420 - Catalyst System Efficiency Below Threshold Bank 1 Since the Cat and o2 sensors are very expensive I wouldnt want to change the part for nothing.

Scrape the sensor mounting flange thoroughly removing all traces of scale and of the old gasket and reinstall the old sensor with a new gasket and with M8-125 stainless nuts and lock washers. Joined Feb 12 2002. Worn and internally failing catalytic converter.

P0420 TOYOTA code description The Engine Control Module ECM monitors the switching frequency ratio of heated oxygen sensors 1 front O2 sensor and heated oxygen sensors 2 rear O2 sensor. This code number references a number that is given to you when you plug your Toyota Tundra into a OBDII scanner. P0442 Toyota Solara.

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. I reset the code and it stayed off for a while. Service Engine Light Often this is the only symptom of the Toyota Solara P0420 code.

Oxygen Sensor The P0420 codes is thrown when the oxygen sensors on both sides of the exhaust have very similar. The O2 sensor still moves up and down when driving but is stable at about 07 volts when at idle. Here are the most common ones.