P0420, Changed parts but light keeps coming back.
#1
P0420, Changed parts but light keeps coming back.
Ok, so I popped a P0420 Catalyst efficiency below threshold bank 1. I have changed my EGR valve, both O2 sensors, Cat and the muffler. The only thing I have not changed is the Pre-muffler.
I have taken the ECM fuse out and reset it twice also. The light stays off for about 3-5 days and comes back on. I have come to the conclusion I may have a bad CAT but what are the odds of a new converter being bad?
I would appreciate any thoughts or input....
I have taken the ECM fuse out and reset it twice also. The light stays off for about 3-5 days and comes back on. I have come to the conclusion I may have a bad CAT but what are the odds of a new converter being bad?
I would appreciate any thoughts or input....
Thread
Thread Starter
Forum
Replies
Last Post
pregis100
Chrysler Voyager & Town & Country
3
03-11-2014 03:46 AM
Jason1969
Chrysler Voyager & Town & Country
5
03-26-2013 12:13 PM
vladio
Chrysler Voyager & Town & Country
4
04-05-2012 09:35 AM