Code P0430

mgpyomamma · Nov 7, 2012

I'm lost. Bank 2 is passenger side right? I replaced pre and post sensors and still get the code.. after clearing DTCs

03MopaRamman · Nov 8, 2012

How long since the exhaust mods? Disconnect the Battery for a good half an hour might help to confirm, if not you may need a **** (Upstream to start) is some food for thought. There is also the steel wool trick but IMO thats half ass.

mgpyomamma · Nov 8, 2012

Its been a while. I just replaced the sensors a few days a go...

03MopaRamman · Nov 8, 2012

OK, so it just showed up one day, then you swapped them out?

mgpyomamma · Nov 8, 2012

Pretty much. And the code still tripped.

03MopaRamman · Nov 8, 2012

OK. Getting ready for a two day snowstorm here so if I get a chance I'll do some searching and let you know if something else may be causing the problem for your 0430. The plug-ins are all the way home/clipped, correct and the front is on the front and the back is on the back (now I say that not knowing if your motor has one or two cats, I am assuming one like my 03 Hemi).

mgpyomamma · Nov 8, 2012

thanks bro.
i replaced post first. then code tripped. then replaced pre the next day. i think there the right sensors. unless Advanced screwed me over, next im thinking the cat might be bad.. but i mean the trucks at 90k miles is that common?

03MopaRamman · Nov 9, 2012

Haven 't had a chance to look yet but if the cat is bad it would run choked like a potato but then again i am not familiar with the woes of a 4.7. See what I can dig up! Edit: ASAP.

SmokedRam · Nov 9, 2012

What sensors did you buy? Bosch or NTK? Bosch O2 sensors are notorious for not working properly in our engines.

03MopaRamman · Nov 9, 2012

Thats good info so Either that or the Catalytic is on its way out. Read the statement at the link with regards to it and the note about coolant which is interesting. Way back in time I remember a shop checked my converter by blowing a hole in it which gave a clear view if it was pouched or not and it was as I remember seeing all the honeycomb melted together and pushed back to the rear of the converter. If converter was good the Guy just rewelds the hole closed and thats it. Mind you that was 20 years ago before CELS where available on the dash. But as I said in my other post I do beleive if the converter was gone you would also notice a lack of Power in the engine as well. Just an idea.

Most Common Trouble Codes

Check the above then scroll down to the P0430 read.

BLKDODGE04 · Nov 9, 2012

i wouldnt imagine your cat would be bad, i have 170k on mine with original cats. until i cut them off anyway... never had an issue before though.

mgpyomamma · Nov 10, 2012

There neither bosch nor NGK. They were 44 a piece at advanced. I can't remember the name.

mgpyomamma · Nov 10, 2012

03MopaRamman said:
Thats good info so Either that or the Catalytic is on its way out. Read the statement at the link with regards to it and the note about coolant which is interesting. Way back in time I remember a shop checked my converter by blowing a hole in it which gave a clear view if it was pouched or not and it was as I remember seeing all the honeycomb melted together and pushed back to the rear of the converter. If converter was good the Guy just rewelds the hole closed and thats it. Mind you that was 20 years ago before CELS where available on the dash. But as I said in my other post I do beleive if the converter was gone you would also notice a lack of Power in the engine as well. Just an idea.

Most Common Trouble Codes

Check the above then scroll down to the P0430 read.

I just don't want to replace the cat :/ do u think I could do the spark plug anti fouler trick just to see if the new sensors I put in are functioning as they should... if the code trips then then maybe the sensors arent correct.

03MopaRamman · Nov 10, 2012

Honest Opinion, new sensors are just that, and they were only replaced after the code first came up in an attempt to fix the problem and now those are no better according to your PCM so I would reset again and if it comes back then find out the best way to test for a dead cat. Do you only have one or two Cats. I don't think antifowlers would cure a Cat Code. i have used them to cure O2 sensor codes but like I said you need to 100% rule out the Cat part of the P0430.

mgpyomamma · Nov 10, 2012

I haven't disconnected the neg. Battery lead yet. Ill try that then clear DTC maybe? Hopefully ur right and the PCM is taking a crap with the new sensors.

03MopaRamman · Nov 10, 2012

Hopefully I did not confuse with last statement. What I kinda meant was the PCM and the sensors are more than likely telling each other the truth and the code is valid.

mgpyomamma · Nov 11, 2012

Oh then that doesn't sound to good... :/

03MopaRamman · Nov 11, 2012

If Your Cat is bad you can replace it with a Magnaflow with the O2 Sensor, I'm sure they make the appropriate in/out size you need. Now the only other thing to decide is if you have emmissions testing will it pass, I don't know, probably, then if you get a code for up front then you can get an antifowler but on a 4.7 with no headers it would probably be alright. Those would be I'm guessing 100 bucks plus cost to install/weld. Alternatively you can buy a replacement OEM one, but at the end of the day if its toast you have to pay the fiddler, but then you should never have a problem and will have increased Power overall.

If it makes you feel Better I spent 808 Bucks on my exhaust in Aug and another 100 on DIY stuff to remove and re-paint/re-install my headers!

Code P0430

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