Okay, so my CEL went on last night, I looked up my error code, here is what it is: (now let me tell you that I just had headers put on about 2 weeks ago... Kooks 3V long tube headers with X-pipe and SLP Loudmouth exhaust).
Basically this means that the oxygen sensor downstream of the catalytic converter on bank 2 (passenger side) 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
The simplest thing to do is to reset the code and see if it comes back.
Then inspect for exhaust leaks.
Next step is to measure the voltage at the oxygen sensor on Bank 2 (the passenger side rear sensor, or the sensor after the converter). The voltage should be low and steady (~200mV, depends on the vehicle). If the voltage varies (e.g. 100mV to 600mV) then it's time to replace the catalytic converter. 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.
What should I do. Should I go back to my muffler place that installed the headers and have them look at it???? Or would I have to go somewhere else, say Ford (the dealership)????
Did you get the off-road x pipe (catless). If so you need a custom tuner where you can disable the rear oxygen sensors, and have it tuned for the off road pipe.
I got the same one after my Kooks were installed. We forgot about turning off the O2 sensor. That is probably what you need to do. An Xcal II can do it.
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2005 Mustang GT, Kooks, Magnapacks, Zex 75 shot, 4.10's,
13.3 ET @ 103.86 (N/A)
12.8 ET @ 105.63 (Nitrous)
I got the same one after my Kooks were installed. We forgot about turning off the O2 sensor. That is probably what you need to do. An Xcal II can do it.
no, i have it with the cats!
I cleared the code and so far it hasn't came back, so I don't know.
Yea.. You need to make sure your tune has been set up right for the Long tubes, but I once got that code on mine to (I have JBA LTs with Catted H-pipe) and I reset it and it hasnt ever came back.
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2006 Mustang GT in Torch Red
C&L Intake, Evolution Performance Tune, Borla Axle Backs, Hurst Shifter, 4.10's, JBA Long Tubes, Prothane Engine Mounts, Steeda UDPs, FRPP Charge Motion Delete Plates
I got the same one after my Kooks were installed. We forgot about turning off the O2 sensor. That is probably what you need to do. An Xcal II can do it.
Well my code came back after clearing it. So how does the Xcal II fix this??? Do I need to adjust my tune and reflash my car?
If you have an 05 wouldn't it be covered under warranty? How much is an O2 sensor? It seems to me that would be cheaper to replace than takeing it somewhere to have it checked for exaust leaks. I would start with the cheap stuff first.
If you have an 05 wouldn't it be covered under warranty? How much is an O2 sensor? It seems to me that would be cheaper to replace than takeing it somewhere to have it checked for exaust leaks. I would start with the cheap stuff first.
He's got long tube headers so Ford isn't going to touch it. Simplest fix is to just turn off the rear O2s.
He's got long tube headers so Ford isn't going to touch it. Simplest fix is to just turn off the rear O2s.
yeah that is what i did, I already have adjusted my tune. I do have another problem though that I am currently trying to fix, see my other thread about the error code P0506
yeah that is what i did, I already have adjusted my tune. I do have another problem though that I am currently trying to fix, see my other thread about the error code P0506
Yeah I saw your other post. I haven't had that problem. What does your tuner say?
Yeah I saw your other post. I haven't had that problem. What does your tuner say?
what do you mean?
I use my tuner to read the error code, since the check engine light is on and it sends back that error code P0506, which means - P0506 Idle Control System RPM Lower Than Expected.
Some people are saying it should be fixed with a tune adjustment, someone else said they actually had this problem and they had to have the Dealer replaced the Idle Control sensor , which meant replacing the entire throtle body, which is under warranty, although i'm approaching 27,000 miles so, before you know i'll be at 36,000!!!
But if I go and take it into replace the throttle body, I will have to take off my CAI, and i don't want to hassle with all that if I don't ahve too, so i'm trying to figure out if someone is an "expert" and knows for a fact what needs to be done, tune adjustment or replace throttle body?
My question is, can i just take it somewhere around town and have someone look at it and tell me for sure if it just needs a tune adjustment or the sensor (throttle body) to be replaced?? And if so, woudl the dealership be able to do this for me, or do i have to go to a place that tunes cars and installs headers, etc..????
I mean, i'll take it to the dealership and have them look at it first to tell me what i really need to do, i am just looking for someone who knows exactly what needs to be done.
I use my tuner to read the error code, since the check engine light is on and it sends back that error code P0506, which means - P0506 Idle Control System RPM Lower Than Expected.
Some people are saying it should be fixed with a tune adjustment, someone else said they actually had this problem and they had to have the Dealer replaced the Idle Control sensor , which meant replacing the entire throtle body, which is under warranty, although i'm approaching 27,000 miles so, before you know i'll be at 36,000!!!
But if I go and take it into replace the throttle body, I will have to take off my CAI, and i don't want to hassle with all that if I don't ahve too, so i'm trying to figure out if someone is an "expert" and knows for a fact what needs to be done, tune adjustment or replace throttle body?
My question is, can i just take it somewhere around town and have someone look at it and tell me for sure if it just needs a tune adjustment or the sensor (throttle body) to be replaced?? And if so, woudl the dealership be able to do this for me, or do i have to go to a place that tunes cars and installs headers, etc..????
I mean, i'll take it to the dealership and have them look at it first to tell me what i really need to do, i am just looking for someone who knows exactly what needs to be done.
I meant your tuner (the person) rather than the device. Sorry for the confusion.
well i bought my sct cal2 from mustangtuning.com and they didn't give me the correct tune, since there was two tunes for the CAI, one for the 80mm maf and one for the 90mm. They kept adjusting it and the code kept getting thrown (the one stating that my car was running way too lean), so i went to sctflash.com, and ryan over there was helping me, he knew exactly what to adjust in my tune, so I posted it and set it all up for the 90mm.
so i've just been going on through sctflash and having ryan adjust my tune, via the message boards.
he then just now adjusted my tune to turn off the o2 sensors and now i had posted a thread about this new idle issue and so far here is what he has stated:
Quote:
what kind of car, and what modifications are done to it?
Ryan
so i told him what my mods were and stated to him that I was the same person that he just adjust my tune to turn the 02 sensors off, due to the code P0430 code being thrown cause of my headers.
And so far, I haven't gotten a reply back from him. I'm thinking about making a new thread and asking him again.
Also, in regards to the 02 sensors, someone mentioned this too me:
Quote:
IF YOU HAVE CATS, YOU SHOULDN'T HAVE TO MESS WITH YOUR O2 SENSORS . . . like by turning them off by Xcal2. . .
im guessing your cats are messed up, like u blew them out or something, because you don't have to have your O2 sensors disabled.
High flow cats on your car will keep the computer thinking it has the stock cats on it and not throw codes. . . if you throw codes, something is wrong with your cats, or your really don't have any at all, and your car will need to be retuned. . . i'm not sure how much you know about your exhaust, but thats my guess with the info you gave me.
so, this is what i was wondering at first, bu I called kooks and they said cats or no cats the rear o2 sensors will go off no matter what, because of the high flow, so i don't know. And that i would just have to turn them off.
is there anyway i can check to see if my cats are messed up. Can I just take it back to the place that installed my headers and exhaust and ask them to check it out for me? Ask them if I have blowed them out? I took it to Compare Automotive Mufflers and exhaust, Brakes & Tires. You think they will be able to check it out for me.
And do you think that is the reason the idle error code is being thrown?
If you had a bad (i.e melted substrate) cat your performance would be horrible and you could quite possibly even melt the cat (and the floorpan of your car) Almost all long tube headers with h/f cats will cause a P0430 by virtue of the increased airflow. Best to just shut off the rear O2s and be done with it.
Help - P0430 OBD-II Trouble Code 
