P0430 Code, driving me nuts.

[DsilverM]

So, I have been running an O/R X pipe for quite some time. Switched numerous times to the stock pipe to pass inspection. However, I recently put it through inspection and put the O/R X back on and I was throwing a P0430 code shortly after. Which means catalyst system below threshold on bank 2. I have done everything to try to clear it but nothing is working. I have changed the passenger side 02 sensor, rear 02s are off through my Xcal 3. Checked for leaks everywhere and cleared it numerous times.

Anyone know what the deal is? Is this something I can tune out?

 

[01yellercobra]

If it's a recent problem then more then likely the sensor is going out.

 

[DsilverM]

If it's a recent problem then more then likely the sensor is going out.

I already replaced the passenger side front 02, and it is still coming back on.

 

[01yellercobra]

Did you pinch any wires last time you were swapping out the mid pipes?

 

[04cobrawhine]

only the rear 02s moniter the cats. if a front 02 was going bad it wouldnt throw that code. it would throw a lean code, rich code, slow switching code or heater code. did you load the correct tune back in after inspection?

 

[DsilverM]

Did you pinch any wires last time you were swapping out the mid pipes?

Didn't notice anything like that, I will check. Thanks

only the rear 02s moniter the cats. if a front 02 was going bad it wouldnt throw that code. it would throw a lean code, rich code, slow switching code or heater code. did you load the correct tune back in after inspection?

Yes, it was a custom tune. I even through in my own strategy tune on making sure the rear 02s were off. Ill re-inspect the rear 02s to see whats up.

 

[mike6466]

get mill eliminators

 

[DsilverM]

get mill eliminators

:nonono:

Why would I do that when I have a tuner to turn off the sensor.

 

[hotcobra03]

i remember a thread i was in for this code ,,,iirc they went to JDM and they made a change in the tune.. i cant remember all of it but i think they made a change in the time it takes for the front o2 to get info from rear o2...

i look thru old stuff later i never empty anything..see if i can find that thread

 

[01yellercobra]

i remember a thread i was in for this code ,,,iirc they went to JDM and they made a change in the tune.. i cant remember all of it but i think they made a change in the time it takes for the front o2 to get info from rear o2...

i look thru old stuff later i never empty anything..see if i can find that thread

That's the O2 transport delay. It needs to be lengthened when you run long tubes otherwise you'll get a slow response code. The heater duty cycle also needs to be raised to warm up the sensor since it's further away from the exhaust ports.

The only reason I didn't mention those previously is because this is a new issue for him. If he had just swapped in long tubes then those are the adjustments that need to be made. If it's a new problem then more then likely something was damaged when the mid pipes were swapped out.