Need Help! Exhaust Mystery

tketke

New member
I apologize if this is long winded but I am at a loss here. I got a p0430 code and. Here is the background.

I noticed an exhaust manifold gasket leak and repaired that. It no longer leaked but after the fix I got the code. Since then I have replaced the cat and both sensors and check for leaks. Nothing has made the code stop coming back.

I have had the URD y pipe for a few years so I know that is not the issue. I also have the URD maf recalibrator that was pre-configured / pre-prgrammed by URD. Last I have a afe CAI.

What can be causing the codes since it can not be the cat or sensors? This is the second time the cat has been replaced in a year which made me question it being bad in the first place. Is it the maf re-calibrator needing reprogramming. Can it be the maf itself?

the only other issue seems like a louder vsv valve a slightly worse gas mileage.

Any ideas would be truly appreciated.
 
Register to hide this ad
O2 sensors will cause that code too. Did you ever check them? I have that code but I have a bad leak right now. Getting all new exhaust soon though.
 

Members online

No members online now.

Forum statistics

Threads
278,457
Messages
3,551,341
Members
248,164
Latest member
charlesz

Trending content

Back
Top