Toyota Repair/P0420


QUESTION: I have got a 2003 Toyota avensis, manual, 1ZZ engine which showed a check engine light and after diagnosis it produced the code P0420. what can be the cause and remedy for that problem. The performance is good only that light is worrying. please assist

ANSWER: Hello, P0420 is a catalytic converter malfunction code, the converter should be replaced.

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QUESTION: so how much does it cost. just a price range

Here in the US the converter can be purchased by non Toyota sources which are much cheaper than Toyota factory, around $400 USD. Plus any labor charge if you have it installed. Check around for your location and also see if there are any suppliers online that ship to you.

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Ted Ritter


I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for more ten years an have answered over 16,000 questions helping Toyota owners with their problems and save thousands of dollars without any compensation, some of my answers are published on many other websites including google and various automotive forums. DONATIONS ARE VERY MUCH APPRECIATED, IF YOU HAVE RECIEVED HELPFUL INFORMATION PLEASE MAKE A DONATION. AS OF TODAY (JULY 22, 2014) ALL REQUESTED GRAPHICS, ILLUSTRATIONS, DIAGRAMS, PHOTOS, WILL REQUIRE THE MINUMUM DONATION UP FRONT.


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