Code P0652 is your main problem.
All the items you're getting codes for run on the
same circuit, it doesn't really matter that a cam sensor code is missing.
The O2 sensor however is on a
separate circuit it seems
Anyways, use that first diagram and don't worry about the other one for now.
You have a problem with the 5 volt reference 2 circuit, that's the first image I linked. There are 3 different reference circuits, the O2 is run on the 3rd.
The major problem here is that you have an intermittent issue. Easiest way to check this is for the problem to be persistent... You need to see where the 5V ref is getting lost
"It may be possible to locate the fault by disconnecting one component at a time from the affected 5 V reference bus while viewing the 5 V Reference Circuit Status parameter on the scan tool. The scan tool parameter will change from Malfunction to OK when the source of the fault is disconnected. If all 5 V reference components have been disconnected and a fault is still indicated, the fault may exist in the wiring harness."
Shaking around the harness to see if the problem comes or goes may help too, but it's not a sure thing. The computer is a possibility as well
Good luck with your headache!