What causes catalytic converter to go bad? on 2001 Dodge Neon

Check engine light is on & the computer code indicates this

by in Uniondale, NY on September 06, 2012
2 answers 6 comments
ANSWER by on September 06, 2012
AGE + MILEAGE.
COMMENT by on September 06, 2012
Could also be due to engine running too rich, burning oil, or an internal coolant leak.
ANSWER by on September 06, 2012
Any other codes besides P0420? mileage and maintainence have alot to do with failures. And yes as stated prior , to rich or to lean or misfire conditions all contribute to premature failure. Also the code may be set falsley due to other conditions. should have it monitored for function before replacement.,,,,,,,,,,,,<<<<<<<<<<<<< UNIONDALE H.S. class of 1980 >>>>>>>>>>>>>>>we rocked!
COMMENT by on September 06, 2012
NEW YORK?
COMMENT by on September 06, 2012
Yep.Long Island. Escaped in '86
COMMENT by on September 06, 2012
Thought you was a yank. I bet them was rocking times sho nuf. Was here in 74 too. GOOD OL DAYS! I just didn't know it at that time.
COMMENT by on September 09, 2012
Wonder if 'kthgran' is ever going to answer my questions , or were they just stupid questions?
COMMENT by on September 09, 2012
We get a bunch of that. I think if one ask a question and gets an answer, it should be acknowledged.