1999 Chevy Suburban OxegenSensor code P0430

1999 CHEVROLET SUBURBAN
Avatar
JJFITZ
  • MEMBER
  • 2 POSTS
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???
Oct 26, 2010 at 1:59 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 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.
Oct 26, 2010 at 3:28 PM
Advertisement
Avatar
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???
Oct 26, 2010 at 3:41 PM
Avatar
WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 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.
Oct 26, 2010 at 3:45 PM