Camshaft Position Error Codes

[rmk10]

I recently purchased a 2011 E90 Comp DCT with 100K miles. Despite the high mileage, the car runs and drives great. My only problem is that I sporadically get a "Service Engine Soon" light based on error codes P0368 (Camshaft Position Sensor B Circuit High Bank 1) and PO342 (Camshaft Position Sensor A Circuit Low Bank 1). These error codes seems to happen after a couple of hours of driving. After the codes trigger, the car runs fine and doesn't go into limp mode. My local BMW indie took a look and couldn't figure out the problem. He swapped the sensors between banks to see if the sensors or faulty.

I appreciate the groups feedback on if anyone has seen this issue before.

Thanks