Need help on this one

[SEEEEYA]

I have had a check engine light on and off from last year and it threw a code of P056(i think) it was for 2nd o2 sensor on passenger side, well today I was driving with a 454 ferrarri and when I stomped on it it fell flat on its face at 3000 rpm and did the same in 2nd gear too, but when I accellerate normal it does not do it, could this be a plugged cat?? it didn't misfire or anything but it just bogged bad, never happened before today.

 

[chesapeake07]

Sounds like a clogged cat to me. What year???

 

[SEEEEYA]

2006 4500 miles

 

[SEEEEYA]

could the clogged cat make the o2 sensor throw a code or does it have to do with the sensor being damaged or bad??either way I have a vipair cat back and hi flos on the way ,should be here by Wednesday