code p0420
#1
TECH Regular
Thread Starter
iTrader: (14)
Join Date: Nov 2001
Location: TEXAS
Posts: 439
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
does this have anything to do with the egr or air pump removal... i have taken off my egr and air pump stuff and i think thats the only codes that i should be seeing. or maybe because i gutted my cats. anybody have any idea what this is...tia