I have 2006 Toyota Prius Initially i had this code coming with a Red triangle sign on dash, also my car was not going more than 20 MPH.. So i use torque pro app and find out one of my battery cell was a little bit weak but not showing a big difference then other cells so i change it.. after changing cell my car is running fine but still i am having this code have checked everything is working fine so what does that sign means anyone know please help me out.. Thanks
Did you completely disconnect the 12v battery when you changed the main battery cell? If not, do so for about 5 minutes then reconnect. If the fault returns there *IS* a problem, but more diagnostics will be required to sort it.
Use the paid version of the app so you can look at HV batttery block data live. Then you can see what is really going on. For example look at this screen shot of live data. At the time it only had a P0A80 code. Looking at the live data you can easy see that block 9 is bad. Much lower voltage than the rest.
