Help! P0430 code!!! - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 24 (permalink) Old 05-04-2014, 02:49 PM Thread Starter
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Help! P0430 code!!!

Hello. 2006, 4.7, V8 with about 108,000 miles on it.

About 5 or 6 weeks ago my check engine light came on. Did the little key trick to pull the code which came up as P0430. Apparently this indicates an issue with emissions, catalytic converter, an exhaust leak, or the sensors on the cat.

So, the first time the light came on, I disconnected the battery for a half hour, reconnected and the engine light went away for about a week. Figured it might have been a fluke incident...

Well, the light has come back on about 4 times since then. Each time I reset it but it comes back on within 4 or 5 days or so. I have been hoping that if I ignore it, it might just go away!!! No luck. It just keeps coming back.

So, the jeep dealer service guy basically told me I could give them $100 and they would diagnose the issue. Oh boy!!!! As excited as I am to give them money to "look" at my jeep, I have been holding off...

I have a small shop down the street that specializes in exhaust systems (they do after market exhausts among other things...) They basically assume That I need to replace the whole cat. $1200 bucks.

So thats my story. Everything is fine with the jeep in terms of functionality. Its just the light that keeps coming on.

I was really just hoping to get some advice from anyone with any experience with this code. Anyone deal with this code in the past? Could it be something besides the cat? Would it be worth having the sensors replaced to see if that fixes the issue?

Anyone with experience with this code, please chime in!!! Thanks in advance.
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post #2 of 24 (permalink) Old 05-04-2014, 03:34 PM
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https://www.jeepcommander.com/forums/showthread.php?t=9101&highlight=P0430&page=2

https://www.jeepcommander.com/forums/showthread.php?t=17109&highlight=P0430

http://www.obd-codes.com/p0430

P0430 OBD-II Trouble Code

Technical Description
Catalyst System Efficiency Below Threshold (Bank 2)

What does that mean?
Basically this means that the oxygen sensor downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

Symptoms
You will likely not notice any drivability problems, although there may be symptoms such as a rough/hard idle when cold.

Causes
A code P0430 may mean that one or more of the following has happened:
The catalytic converter is no longer functioning properly
An oxygen sensor is not reading (functioning) properly
There is an exhaust leak

Possible Solutions
First, inspect for exhaust leaks.
Next step is to measure the voltage at the oxygen sensor on Bank 2. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.
One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

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Last edited by jeep5253; 05-05-2014 at 01:56 AM.
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post #3 of 24 (permalink) Old 05-04-2014, 05:45 PM Thread Starter
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Thanks but I already looked through those threads and didnt really find anything helpful...

Anyone ever actually deal with this code/ issue?
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post #4 of 24 (permalink) Old 05-04-2014, 05:59 PM
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Really ? You didn't find anything helpful in any of those threads or the info that I posted below ? Unbelievable.

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post #5 of 24 (permalink) Old 05-04-2014, 09:51 PM Thread Starter
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Quote:
Originally Posted by jeep5253 View Post
Really ? You didn't find anything helpful in any of those threads or the info that I posted below ? Unbelievable.
Correct. The only solution in the thread discussions seems to be to get a new catalytic converter put in for upward of $1500 bucks. I feel very strongly that there might be other options when this particular code comes up. Using that logic, I might as well go out and buy a new jeep every time a code pops up... I cant afford that.

I have done a bit of research to no avail, hence the reason I made this thread.

I am simply looking for anyone who has had this code come up or experience with it who may have found another solution without needing to drop more than a grand.

My jeep is functioning fine. Its not like its making any crazy noises or having any functionality issues at all. But I do want keep everything up to date and take care of the problem.

So, no. I have not found any helpful info yet.
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post #6 of 24 (permalink) Old 05-04-2014, 10:11 PM
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Quote:
Originally Posted by Dirty_Walter View Post
The only solution in the thread discussions seems to be to get a new catalytic converter put in for upward of $1500 bucks.
Then I think you need to read them again.

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post #7 of 24 (permalink) Old 05-05-2014, 04:42 PM
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Mine was throwing the same code. While at the dealer for another problem, the tech flashed my ECM based on a technical service bulletin concerning that code. It basically widens the acceptable limits of the fore and aft O2 sensors. It's been several months without reoccurring.
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post #8 of 24 (permalink) Old 05-05-2014, 06:49 PM Thread Starter
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Originally Posted by Askbob View Post
Mine was throwing the same code. While at the dealer for another problem, the tech flashed my ECM based on a technical service bulletin concerning that code. It basically widens the acceptable limits of the fore and aft O2 sensors. It's been several months without reoccurring.
Hey, Thanks a lot! I will definitely look into that!

The thing is, I just had my computer flashed like a month ago for some sort of recall/ firmware update to the jeeps computer...

I can only assume that the update that they did would be the most up to date firmware which would leave me in the same boat...

Once again though, thanks. This could lead to something!
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post #9 of 24 (permalink) Old 05-05-2014, 06:54 PM
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Quote:
Originally Posted by Dirty_Walter View Post
Hey, Thanks a lot! I will definitely look into that!

The thing is, I just had my computer flashed like a month ago for some sort of recall/ firmware update to the jeeps computer...

I can only assume that the update that they did would be the most up to date firmware which would leave me in the same boat...

Once again though, thanks. This could lead to something!
That info about the TSB is in one of the threads I gave you that you said you read but couldn't find anything helpful. There are other things to check out also besides bad cats if you just take the time to read what I gave you. Post #10 here---> https://www.jeepcommander.com/forums/showthread.php?t=9101&highlight=P0430

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post #10 of 24 (permalink) Old 05-05-2014, 08:55 PM
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http://www.xkjeeps.com/TSB/tsb_xk_1800408a.pdf


As mentioned above, this is the TSB I believe was the fix for mine. The tech that worked on mine said the original o2 parameters were very stringent to be able to pass emissions. This TSB update widenes the o2 acceptable limits. I have the 5.7.
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