I have the same issue. 2014 P85. My pump has been running for 6 hours after a standard overnight charge @ 32amps. Over the last two years the car has never acted this way. Something changed in 2019.16.1.1 I am losing about 1 mile of charge per hour with the pump running.
I have also submitted the issue to Tesla. I also posted this on the 16.1.x thread.
Bobby
Thanks. This confirms that it not only me. The issues I see with this new behavior is 1) this process uses the HV battery to run even if you are plugged in, and 2) more wear and tear of the pump (if indeed that's where the noise is coming from).
Those are beside the fact that the Tesla support has no idea of this new behavior.