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Top suggestions for P0420 2000 Toyota Avalon
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Toyota
Code P0420
P0420 Code Toyota
M
Code P0420
Bank 1
P0171
Toyota
Toyota
Camry Code P0420
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Code Fix
P0420
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Toyota
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toyotanation.com
P0420 fix
I recently ran into this with my brothers Sienna. Code P0420 was present. I tested the converters and it appeared they were bad. I then checked the tech info center at www.techinfo.toyota.com and ran across a TSB on this . ECM replacement was required. I replaced the ECM a week ago and 2 days...
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