Those errors clearly point to an isolation issue in a component outside of the battery pack. First culprit is usually the battery coolant heater. Next tends to be the drive unit.Have you ever heard of or personally see a drive unit failing with under 5,000 miles? I have a 11/2015 P90D non-ludicrous. Basically throwing all the codes attached and lost most power today and all regen. Car doesn’t have issues charging View attachment 804738
As for drive units failing early, sure. My very first Model S required a drive unit replacement at ~3500 miles. Granted, that was a different issue, but still, they can fail at any mileage.
In the case of replacements, a remanufactured unit failing in a short period isn't going to be as uncommon as a new unit... most likely due to a reassembly issue around the inverter coolant seals, which I've seen several times over the years.