Can't get rid of p0056 code

[Boostedawd91]

*Prior to all this I had no codes *
So, a few months back I installed arm catless downpipes. I bought a pair of harness extensions to swap my o2 sensors correctly to keep them in their "correct" bank. Since the arm do not cross over.

Even since them I have had p0056, o2 sensor heater control circuit bank 2 sensor 2(the one with the plug was in the bottom corner of the engine). I tested my o2 with a multimeter, and it's fine. I even installed a new one and still has the code. I got a new harness again, and the code went away for a few key cycles and the popped up again. This last weekend I had the downpipe off and unplugged it and plugged it back in again, and it lasted 2 key cycles and came back. It's always instant, even right after clearing it. How else might I fix this?

[Valpo A7]

Have you tried a spacer for the sensor?

If all else fails you might have to go back to the catted downpipe. Everything I have watched or read says that going cat less on this platform will produce ZERO additional power. Unless the stockers are plugged…..

[Boostedawd91]

The code itself is just not signal, not a lean or rich code. When I check live logs the voltage from that sensor stays at I believe .49v it was? It doesn't fluctuate at all. I don't have the original dp for it

[SaVAGeSoot]

Post full code and FF data.