DTC 2737 (P0068) Error

[evotistic]

So I got the above code after having a CEL appear, and I am having trouble diagnosing this or finding anything online. I'm looking for any help that someone here might be able to provide before I take it in to get diagnosed. I'd prefer to DIY if possible.

The P code fault text is "charge plausibility, diagnosis, cold-start strategy, bank 1" and the action in service recommendation is "check induction system B1 for leaks".

I did not find any vaccuum leaks, but only checked the airbox and plenum.

I acknowledge this could be related to the TAs.

Car has not gone into limp mode. Oil filter housing gasket was recently changed by a shop.

I did have a rough idle and a 'slightly' elevated operating temp when i drove it on Thursday (maybe 220 deg).

Any ideas?