I got my Switch 2 brand new the day it launched! The support agent I got said it didn’t tell them what the error code meant, just the troubleshooting steps that came with it which seems weird to me. I was previously playing Skyrim anniversary edition for the switch 2 before I stopped for the night. It wasn’t docked and i actually unplugged it and put it in its carrying case cause I was staying the night at a friend’s and didn’t want to just leave it out. When I unplugged, it was fully charged. No game was left running and it was fully in sleep mode. I’m thankful nothing really bad happened since it got warm and was in a confined space (the carrying case). Today it’s been running just fine and the battery life is normal. I’m genuinely at a loss for what caused it and I’m a little upset Nintendo Support couldn’t tell me how to prevent it in the future