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

Forum statistics

Threads
278,312
Messages
3,554,085
Members
248,016
Latest member
Advally Service

Trending content

Back
Top