Please do not "hijack" some else's topic to ask your question. The member you responded to has not been active here in 2 years and would have been unlikely to see your post, which has now been split off into its own topic. Thank you.

Probably the first thing I would do is verify your oil pressure using a mechanical gauge to see if it really is low, in which case you likely have an internal engine problem like bad oil pump or worn bearings. It's also possible for a bad oil filter to cause this kind of problem. If pressure tests as normal you'll know you're dealing with a computer sensor or module problem. (Did you install an OEM oil pressure sensor or is it aftermarket?)

Unfortunately I suspect that you really do have low oil pressure because of the camshaft problem being reported. Low oil pressure would mess up the cam phaser operation. However the pressure should be tested so you know what you're dealing with.

I thought you have multiple problems or your computer system is shorted out and needs a new computer. If I were you, I would start by having mechanic. Put an oil pressure gauge on the engine. See what the oil pressure is. If you really are losing oil pressure, you're going to have to rebuild that engine and it's not worth doing on that thing. I would start there