P0430 Toyota -

Question

check engine light turns on and off with po430 code

Answer 1

HI there,

This usually means you will need to replace the catalytic converter, however, I would check the plugs, if the truck is due for a tune up it may not be burning the fuel as cleanly as it should. It is also possible the rear O2 sensor on bank 2 isn't working properly, this will also cause the code to appear.