H3 Check Engine Light Code P0430

[amrg]

Engine light came on, pulled a code P0430 (Catalyst Efficiency Below threshold, Bank 2). Swapped the Left and Right O2 sensors to make sure its the Cat and not the sensor, reset the codes, 2 hours later the check engine light came back on, same code.

So I need to replace the Front right Cats (will do both sides at the same time). 3 questions, First: are the front cats high flow? , Second, If not, is their a high flow replacement for them? Third, do I need to replace the O2 sensors too?

Finally, assuming the front cats are fixed, would there be a problem if I remove the rear cats?

Thanks,

 

[adventr]

Good timing. I had this same code pop up one day last week. I cleared it, and it hasn't returned, but I'm looking at replacing my cats as well.
At least the front two. Those are the only ones that the PCM monitors via the rear O2 sensors.

The rear cats can be deleted... That's most likely what I will do at the same time.