Having problems with your 1999 Lexus ES 300 ?

98 es 300 read a code of p0420,what could cause this to come up as a false reading?

\015 Engine light came on ,it runs fine,i was told bank 1 02 sensor\015 Posted / edited by AnonymousUser on : 17-01-2022

Answers :

PO420 & PO430 --are worn out Exhaust Converters

You can research any Generic OBD2 Codes on the
internet & learn more than you need to know

A Converter is only good for 12 years & will only pass
inspection MAYBE for 14 years

O2 Sensor Codes are PO170 thru PO 175, so you
may want to study on your own, as you were given
useless advice
Repair Help & Product Troubleshooting for 1999 Lexus ES 300

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