Code P0420 help & Questions
Junior Member
Joined: Aug 2012
Posts: 80
Likes: 1
From: Murfreesboro, TN
Year: 1998
Model: Cherokee
Engine: 4.0L
Hey! I was reading one of your posts. Did you ever figure out what the issue was triggering that P0420 code? I have done many of the items you have but i still have that code.
Junior Member
Joined: May 2013
Posts: 82
Likes: 0
From: lawndale,ca
Year: 1988
Model: Cherokee
Engine: 4.0
If the misfire code was not repaired and still driven for athe while like thatto it could of caused the converter to over heat and go bad but more its likely a sensor
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