service engine soon code

[ws sikz]

code p0420 catylist low bank one
is it cat or the o2 sensor didnt lookinto it yet code cam one today braught it to my shop and im gonna do it tomarrow but you had anyexperiance with this or weich problem it is?

[03slowZ06]

p0420 twc low? Thats a new one on me. Our cars dont have a 3 way cat. are you sure that code is the right one?

[ws sikz]

yea thats it p0420 catylist efficiency low bank 1 reading off my scanner right now 2000 t/a m6

[03slowZ06]

Ok driverside cat is not working good enough anymore. Time for a new one.

[ws sikz]

how muxh is a high flow and will i still passs nj emissions and do i have to replace both sides with high flows

[ws sikz]

the dealer is doing on tueday no charge thanks alot, 9 year 80k miles i have 74k

[Chris 96 WS6]

I was going to say...the emissions equipment is all warrantied to 100K miles.