CamaroZ28.Com Message Board

CamaroZ28.Com Message Board (https://www.camaroz28.com/forums/)
-   LT1 Based Engine Tech (https://www.camaroz28.com/forums/lt1-based-engine-tech-9/)
-   -   Code =P0420? (https://www.camaroz28.com/forums/lt1-based-engine-tech-9/code-%3Dp0420-225196/)

MuffZ28 Feb 15, 2004 04:37 PM

Code =P0420?
 
I keep getting this code. My manual says it means "cata

InjectedSS Feb 15, 2004 04:50 PM

P0420 = Three Way Catalytic Converter (TWC) system low efficiency Bank 1

It means the cat on the left side of the car is clogged or some crap!

Actually I think it means that you should have bought an OBD1 Car :D

MuffZ28 Feb 15, 2004 04:55 PM

Would that be the "coffee can"? when I looked underneath, it appeared to have only 1 cat, right after the Y.

Super Slow '97 Feb 15, 2004 05:35 PM

Yes it is the can looking thing after the y. '96 is a duel cat car so the other one is in the vertical position next to the oil pan. I think this is the one you are having problems with as I think the driver side is bank one.

MuffZ28 Feb 15, 2004 07:09 PM

Bank 1 is drivers side. I wasnt sure if that "thing" was a cat or not. Makes sense now. If I get rid of 1, should i do both? cant really afford to since i'm married w/ 4 children and am the only 1 working. Is there any negative effect from removing just 1?

fastbird96 Feb 15, 2004 07:29 PM

If you remove them you will have to get O2 sims or the SES light will stay on.


All times are GMT -5. The time now is 06:53 AM.


© 2026 MH Sub I, LLC dba Internet Brands