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Toyota Repair/Car wont start


I have a 2001 Lexus es300, today car started running rough then when I stopped, the car cut off and will not restart, cranks and shut back off will not run even with foot on gas, I put OBD on it and got codes P0420, P0440, P0441, and P0446. Any help would be appreciated

The P0420 is for a catalytic malfunction, the others are for a large leak at the fuel evap recovery system they may be related to the no start condition, it's possible that the evap/charcoal canister has become saturated with fuel and is dumping it back into the intake system. Remove the vapor hose from the line coming from the rear, this hose has a green valve on it, check to see if any fuel is drawn into the hose. The evap canister is at the rear in front of the gas tank, check for any signs of the canister externally leaking.  The P0420 code can be caused by an overly rich air fuel mixture.

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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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