CEL help P0430
 

what is P0430 ?
Converter ???

It means the O2 sensor is broken. Need to replace =] If you have AOL, or AIM, hit up PL GAZI, he has O2 sensors for CHEAP!

i have GS300
which sensor
the one in Midppipe ?

no helpppp???????????

P0430 - Catalyst System Efficiency Below Threshold (BANK2)

This could be a bad Cat or bad O2 sensors. Its cheaper to start with O2's if your looking to fix it fast without having it tested and diagnosed.

If you have access to the right tools and know how you can test the O2's by viewing their waveforms. Sensor 2 should switch slower than sensor 1 if the Cat is working properly. If they switch at about the same speed the Cat is probably shot. Let us know what you come up with.

Some informative pictures can be found here too.
https://www.clublexus.com/forums/sho...d.php?t=352099

P430 is bank 2 sensor 1 or sensor 2

??? can anyone answer the question above plz

just google it.