Why would it have to make sense to itself?
Pipes don’t make sense of water.
ERROR: Subconscious does not have to make sense of anything. That is the job of the consciousness.
You MAY be falling into a common error https://en.wikipedia.org/wiki/Homunculus_argument and it’s hard not to.
BUT: there MAY be partial truth to some of the homonuculus argument. If predictive models are stored and accessed, it can be a kind of homunculus but it’s disparate pieces.