Question about 2003 Toyota ECHO
Car runs good but engine light comes on with these 2 codes
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Posted on Jan 02, 2017
P0420 is catalyst system efficiency below threshold (bank 1)
P0440 is evaporative emission control system malfunction
P0441 is evaporative emission control system incorrect purge flow
Posted on Mar 29, 2009
Not just a faulty catalytic converter will trigger this code. Many other issues can trigger this code.
Posted on Aug 25, 2009
If the code has cleared on its own then you need to disconnect the battery and re-connect it. This will clear the codes out of the memory. If you don't want to do this you can go to an auto parts strore and have them hook the little computer up to your car and they can clear out the code as well.
Posted on Sep 02, 2009
If you think the catylist is ok check your 02 sensor instead. P0420 is about the convertor and maybe water got in your tank fron filling it at a fuel stop with low reserves in their tank. They all do have water in their tanks. If you like fill your tank and the disconnect your battery for 15 minutes. reconnect it and drive the car 50 miles or more on the highway. This may clear your codes out
Posted on Jan 23, 2010
SOURCE: po420 on my 2001 sienna
P0420=Catalyst System Efficiency Below Threshold Bank 1,
The air filter is not the cause here,this is just a code saying your converter is not doing its best,
Posted on Jan 26, 2010
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