P0420 Prius 2005
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The ecu determines the efficiency of the catalytic converter cat using two sensors.
P0420 prius 2005. I just got a scan tool that works on my phone and got the two plots below. This is where the powertrain code p0420 comes in to play. My 2005 prius is throwing a p0420 code catalytic converter.
Prius timing if your prius is misfiring or the exhaust timing is off this can affect the gasses that are actually going to the o2 sensors enough to cause the p0420 code to register. P0420 2005 toyota prius description the engine control module monitors the switching frequency ratio of heated oxygen sensors 1 front o2 sensor and heated oxygen sensors 2 rear o2 sensora three way catalyst converter manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. P0420 2005 toyota prius meaning the engine control module monitors the switching frequency ratio of heated oxygen sensors 1 front o2 sensor and heated oxygen sensors 2 rear o2 sensora three way catalyst converter manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.
However if the p0420 code is the only trouble code or if the other codes are all p042x codes the likelihood of a failed catalytic converter is much higher. The way that toyota prius ensures that it is staying economically friendly is to monitor the catalyst and set a trouble code should it fail. 2005 toyota corolla sedan 2004 toyota prius 2004 toyota corolla 2003 toyota rav4 2003 toyota land cruiser 2003 toyota celica.
If the toyota p0420 code is combined with other codes try fixing the other codes first. The upstream oxygen sensor located before the cat and the downstream oxygen sensor. P0420 2007 toyota prius description the engine control module monitors the switching frequency ratio of heated oxygen sensors 1 front o2 sensor and heated oxygen sensors 2 rear o2 sensora three way catalyst converter manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2.
In the first picture i was coasting which shuts the engine off then i hit the throttle momentarily then coasted again. What is the toyota p0420 code mean. Exhaust leak if theres a noticeable exhaust leak coming from the vehicle it can change what the o2 sensors register enough to throw the p0420 code.
Several things can cause a p0420 code in a toyota.
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