It's been down there for a while now, the curiosity finally overcame me. Couldn't find much on google about it, people were complaining about it being extremely low at 10V. I kind of figured it had to be a buggy reading, thought it would be impossible for a computer to function if it were correct.
This is a pretty old desktop and you can see all the values are low showing the PSU is past it's time, but 2.3V is just ridiculous.
Check the voltage on BIOS. All the monitoring tools(HWMonitor, OTCC, Speedfan, etc.) report between 8 to 10 V on the +12V in my computer, but the BIOS shows 11.9xx. This system has been running without problem for the past 6 months with heavy load.