Engine Performance problem
1999 Chevy Suburban V8 Four Wheel Drive Automatic
I need to know which sensor is bank 2, I have 4 sensors which one is it?
Tuesday, October 26th, 2010 AT 1:59 PM
3 Replies
WRENCHTECH
MECHANIC
20,758 POSTS
Where did you get the idea that PO430 is an oxygen sensor code. That is for bad Catalyst efficiency on bank 2 which is almost always a bad Catalytic Converter.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Tuesday, October 26th, 2010 AT 3:28 PM
JJFITZ
MEMBER
2 POSTS
I was told by the mechanic that inspected my truck. You said almost always a bad catalytic converter, what else could it be?
Was this
answer
helpful?
Yes
No
+1
Tuesday, October 26th, 2010 AT 3:41 PM
WRENCHTECH
MECHANIC
20,758 POSTS
I've seen it be something else only one time and that was a crack in the exhaust between the 2 oxygen sensors. There is a lot of criteria it has to meet to set that code and it's rarely wrong. There are always exceptions to everything.