Trouble Code PO430, What's it mean?
Thread Starter
2nd Gear
Joined: Jun 2008
Posts: 2
Likes: 0
From: Burbank CA
Trouble Code PO430, What's it mean?
Gotta a new code. Fix one, get another. This says it is "TWC system, low efficiency, bank 2". What does it mean and what does it require to fix it?
Thanks for any help.
Thanks for any help.
Melting Slicks
Joined: Feb 2007
Posts: 3,191
Likes: 10
From: New Smyrna Beach Florida
Do you have headers? I get P0420 and P0430 from time to time as I have headers and High flow converters. My understanding of the code is that it indicates the cats are not working properly on a stock car. With headers they need to be tuned out. My were not tuned out yet although the car runs very good. If your car is stock, it could indicate a problem with the converter.
I really have no way of verifying that...
Thread Starter
2nd Gear
Joined: Jun 2008
Posts: 2
Likes: 0
From: Burbank CA
The car is a stock c5 Z06 with 55K miles. Had no problems the first 45K but then the water pump went out and the thermostat failed. And in the last 5000 miles it's thrown a lot of codes. I've had the Steering column lock and yaw sensors fail. When I got the codes indicating the EBCM failed I found this site. With the help of the forum I had the EBCM rebuilt by the ABSFixer recommended on ths site, and solved that issue myself. So when I got this code a week after that fix I was....unhappy. Anyone know what a new cat costs? Thanks to all who provide us with information.
Last edited by lowkeylee; Jul 26, 2008 at 04:53 AM.
Melting Slicks
Joined: Oct 2007
Posts: 2,464
Likes: 2
From: Cedarburg, WI
The car is a stock c5 Z06 with 55K miles. Had no problems the first 45K but then the water pump went out and the thermostat failed. And in the last 5000 miles it's thrown a lot of codes. I've had the Steering column lock and yaw sensors fail. When I got the codes indicating the EBCM failed I found this site. With the help of the forum I had the EBCM rebuilt by the ABSFixer recommended on ths site, and solved that issue myself. So when I got this code a week after that fix I was....unhappy. Anyone know what a new cat costs? Thanks to all who provide us with information.
