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Old 07-24-2011, 05:12 PM
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Catalytic Converter Questions

My check engine light came on last thursday, and i went to a mechanic and he told me it was a bad reading from my catalytic converter. He cleared the check engine light, and told me if it happens again come back. It came back on today, and i was wondering what could be wrong. Has anyone had this problem before, could if be just a simple O2 sensor? Any help would be appreciated.

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Old 07-24-2011, 05:15 PM   #2
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how many miles are on the jeep and what code is it giving?

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Old 07-24-2011, 06:30 PM   #3
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Your profile says your jeep is an 05. If you got under 80k you are still under the emmssions warrenty. If you do have a bad cat they are expensive because its a whole y pipe assembly with 3 cats.
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Old 07-24-2011, 06:48 PM
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Your profile says your jeep is an 05. If you got under 80k you are still under the emmssions warrenty. If you do have a bad cat they are expensive because its a whole y pipe assembly with 3 cats.
My jeep has 69k miles on it, and did i have to setup anything for this warranty, or does it come standard with my jeep.
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Old 07-24-2011, 06:50 PM   #5
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My jeep has 69k miles on it, and did i have to setup anything for this warranty, or does it come standard with my jeep.
Jeeps come with a federal 8year 80k emissions warrenty.
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Old 07-24-2011, 06:51 PM   #6
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Mine had 79k on it when i tooke it in last year then had to wait 3 months because the cats were on national backorder.
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Old 07-24-2011, 07:03 PM
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Alright, cus ive gotten things in the mail saying an extended warranty and stuff, but i never signed up for it.
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Old 07-24-2011, 07:04 PM
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Alright, cus ive gotten things in the mail saying an extended warranty and stuff, but i never signed up for it.

and scoob its showing the code p 0431
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Old 07-24-2011, 07:14 PM   #9
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Thats the code i had for mine when my cat went up
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Old 07-24-2011, 07:18 PM   #10
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Alright, cus ive gotten things in the mail saying an extended warranty and stuff, but i never signed up for it.

and scoob its showing the code p 0431
Its a federal law they have to fix it under warranty. 1 thing they will do is replace the 02 sensor to see if that fixes it. They might charge you for that. But when that doesn't work they will have to replace the cats for free.

0431 is the rear pre-cat, lower o2 sensor. The sensor might be bad, but its most likely the pre-cat that is toasted.
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Old 07-24-2011, 07:26 PM
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Can't i just buy an o2 sensor from advanced auto or something to save some money? or will they make me buy from them?
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Old 07-24-2011, 07:34 PM   #12
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Can't i just buy an o2 sensor from advanced auto or something to save some money? or will they make me buy from them?
the only thing i can think of with that is if jeep doesn't do it they may still say it's o2 sensors and change them again.
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Old 07-24-2011, 08:20 PM   #13
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Shouldn't cost a cent the sensors should be included in the emissions warranty.
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Old 07-24-2011, 08:31 PM   #14
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Shouldn't cost a cent the sensors should be included in the emissions warranty.
Very true, The o2 sensors are there as part of an emisions control device therefore should be covered under an emisions warrenty.
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Old 07-24-2011, 09:31 PM
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Alright thank you guys, looks like im stopping by a dealership sometime soon. Is it alright to drive without this being fixed for a little while, as i have been seeing that the cat takes forever to come in.
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Old 07-24-2011, 10:10 PM   #16
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it shouldn't hurt anything
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Old 07-24-2011, 10:30 PM   #17
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Alright thank you guys, looks like im stopping by a dealership sometime soon. Is it alright to drive without this being fixed for a little while, as i have been seeing that the cat takes forever to come in.
It wont hurt anything but if they are on national backorder again its first come first serve so get it in there to get your name on the list.
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Old 07-24-2011, 11:20 PM   #18
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We have a 2004 and the check engine light came on. We had to replace 3 catalytic converters.
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Old 07-25-2011, 05:19 PM   #19
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We have a 2004 and the check engine light came on. We had to replace 3 catalytic converters.
The cats for the newer tj's are a together in one y-pipe assembley. Theres 2 precats and one main cat. so when they go bad all 3 get replaced.
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Old 06-25-2013, 11:42 AM   #20
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someone has a picture of the whole catalytic system? from manifold to exhaust? I think i need to replace my cat and i would like to know what do i need to replace.

thank you
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Old 06-25-2013, 12:09 PM   #21
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Check the date your Jeep was originally sold also known as it's In Service date. Your very close, if it was sold before June 25th 2005 your out on time if it's still in get it taken care of under warranty ASAP!

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