Thread: OBD Code 0420
View Single Post
AFJuvat AFJuvat is offline
Registered
 
AFJuvat's Avatar
 
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
Hi,

Your catalyst is not operating as well as it should on cylinders 1 - 3.

This error can be caused by excessive amounts of stop and go driving.

I would suggest taking it out and letting her rip and see if the problem corrects itself. Otherwise, you will be looking at a catalyst in your future.

Does your custom exhaust allow for both oxygen sensors on both banks?
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann.

Ihr Brunnen der nutzlosen Porsche Information
Old 05-19-2007, 12:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)