Catalytic converter or O2 sensor?
Unregistered
Posts: n/a
Hey guys, I recently ran a diagnostic on my '96 Honda Accord LX 4 cylinder and I got the code P0420. I looked it up, and it said Catalyst System Efficiency Below Threshold (Bank 1). My guess is that it is either the oxygen sensor or the catalytic converter. If it is the catalytic converter, is it likely to be the one in the front or the back of the car? Thanks!
Last edited by Parker96; Apr 20, 2009 at 06:20 PM.
Thread
Thread Starter
Forum
Replies
Last Post
reservoirdog
Headers, Intake, & Exhaust
8
Dec 20, 2024 09:46 AM
acez29
General Tech Help
7
Nov 25, 2012 07:19 PM




