The hybrid warning light came on and said to pull over to a safe place, it seems to run perfectly, however the arrows that shows the engine loading the battery etc doesn't work anymore, it has a little less than 100,00 miles on it

What is your question?

I took it to a mechanic and he said the scan showed a fault code for the hybrid battery pack, but the voltage was normal. Also scan showed a history of hybrid voltage system isolation fault. History and current. The display shows the battery is one bar less than full charge.

How long has your 2012 Toyota Prius C had this problem?

a couple days