Red Triangle keeps coming on intermittently

Hello, this is my first time posting here so please go easy on me.
I own a 2008 Gen2 Prius with 300,000 miles on it, it's been throwing a red triangle intermittently for over 2 years. I have a Torque Pro app and an OBD2 meter, which I found one code, a MAF Sensor error. The hose clamp underneath was loose, so I tightened that, and I replaced the MAF Sensor around March, which got rid of the Check Engine light and the code. Using the OBD2 meter now, even when there's a red triangle, there are no codes.

The red triangle did not stop though, which kept coming and going, I tried replacing the wire under the fuse box that I read fixed it for someone else on here, but I may of done a bad job of it. There is no reliable way to get the triangle to trigger, it's entirely random. The car does burn through oil pretty quick, roughly 1 quart in between oil changes, but I check and top it up regularly, the oil can't be the issue.

I attached pictures of the torque apps readings, from what I can tell the battery blocks are all in good health, they are running hot maybe? The temperature I got off of the torque app was reading in the 90s, and during a drive, I had someone else watch the readings as I drove, the temperature went above 100 degrees. I'm not sure what a normal battery temp is.

The engine overspeeds when the battery is entirely full, fairly often going down shorter downhills, when years ago, it would only overspeed on long hills like a mountain.
Yes I've taken it to a dealer, no it hasn't acted up when I could get it there, not until today, but he only used an engine OBD meter, not hybrid battery compatible, it didn't catch any codes either.

I don't know what else to do at this point, I've tried so many things, looked up so many suggestions and guides on how to fix this and nothing has worked.


I will provide more info if need be, thank you. ​