P0420 2003 Toyota Highlander -

Question

I have trouble with my Toyota Highlander 2003 code P420 and P430 marked me in the scanner and will Change the catalytic and I still dating the code need help and How can I fix it already and spent a lot on catalytic change and not the code is deleted

tengo con Problema con mi Toyota Highlander 2003 el codigo P420 y P430 me marcan en el scaner ya le Cambie el catalitico y me Sigue Saliendo el codigo necesito ayuda Como Puedo repararlo pues ya e Gastado Mucho en change catalitico y no se borro el codigo

Answer 1

Hi there,

These codes are for the catalyst system on bank 1 and 2. Here is a list of possible causes.

P0420 TOYOTA - Catalyst System Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_toyota.html