LS1TECH - Camaro and Firebird Forum Discussion

- PCM Diagnostics & Tuning (https://ls1tech.com/forums/pcm-diagnostics-tuning-7/)

- - check engine light (https://ls1tech.com/forums/pcm-diagnostics-tuning/186520-check-engine-light.html)

white t/a

06-26-2004 11:41 AM

check engine light

I have a code P0420 and I need help to get this fixed.

ataylors

06-27-2004 09:42 AM

Trouble Code P0420 - Catalytic Converter Inefficiency Bank 1
I assume your running O2 sims, right?? Looks like one might be bad

white t/a

06-27-2004 07:17 PM

Quote:

Originally Posted by ataylors

Trouble Code P0420 - Catalytic Converter Inefficiency Bank 1
I assume your running O2 sims, right?? Looks like one might be bad

Would it be one o2 sim or both ? Should I get new one's what should I try? I am running with an off road y-pipe no cats.

ataylors

06-27-2004 07:20 PM

well if you want to be sure, swap them and see if you start throwing a code for the other side.

white t/a

06-27-2004 07:24 PM

Quote:

Originally Posted by ataylors

well if you want to be sure, swap them and see if you start throwing a code for the other side.

The guy I took the car to tald me that it was possible both were bad I need to get this car to pass inspection by next week or so.

white t/a

06-27-2004 07:26 PM

If these o2 sims work the way they should I shouldn't have any problem passing emisions testing right?

All times are GMT -5. The time now is 09:19 PM.