po4030
Thread Starter
Teching In
Joined: Jan 2005
Posts: 11
Likes: 0
From: Ohio
po4030 catalyst efficiency below threshhold on bank 2 .
Anyone know what causes this.Is it a catalytic converter problem?
Thanks
Anyone know what causes this.Is it a catalytic converter problem?
Thanks
Last edited by forbie; May 5, 2006 at 10:41 AM. Reason: typo
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Sounds like a bad passenger side cat (P0430). Stock cats are covered under the federal emissions warranty for 8yrs/80K. You can try swaping the rear 02's side to side to see if it code changes to P0420 (driver side) but it's most likely the cat.
