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Catalytic Converter/Check Engine Light

Tiny
DODGECHARGER2006
  • MEMBER
  • 2006 DODGE CHARGER
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 172,000 MILES
Two weeks ago my check engine light came on so I went to AutoZone and got a free engine scan. They told me it was the catalytic converter. More specifically, the sheet they printed says "Code P0430 indicates that the Bank 2 Catalyst System efficiency was below threshold for a predetermined period of time." I have only driven about 175 miles in those two weeks to and from school. How long can/should I wait before this needs to be fixed? The mechanic at AutoZone said it wasn't a pressing issue since the light just came on. I need my car for school so I want to wait until I am home on break to get this fixed which may be a few more weeks. I don't drive it often while I am at school, just the 75 miles to get there from my house in Richmond.
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Sunday, October 6th, 2019 AT 7:39 AM

2 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

You should be alright for a few weeks. Basically, You would fail a smog test by having the check engine light on. You might notice a slight drop in mpg. You should really only be concerned if the internals of the converter dislodge/break up and plug the system.Here is a tutorial for you to read:

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

Hope this helps and thanks for using 2CarPros.
Danny-
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Sunday, October 6th, 2019 AT 6:56 PM
Tiny
AL514
  • MECHANIC
  • 4,793 POSTS
Hello, one other thing is; you may want to have someone check to see if that bank 2 is running rich. This can be caused by a misfire happening on that bank. A check of the oxygen sensor signals on that side of the engine can verify that it is actually a bad cat and not a sensor or misfire causing this problem. Catalytic converters usually go bad because of a rich running condition which causes the catalytic converter to melt down.
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Sunday, October 6th, 2019 AT 7:31 PM

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