P3193, P0171, P0A0F

Hi all
On my 2gen prius suddenly my dash board reading got freezed showing full 70 fuel reading i was talking that it going fine did not run out of gas, while drive my fuel got run out and my acceleraation pedal on my foot not functioning and breaks are functioning, I parked beside a high way while I am trying to figure it out, on/off the power button I check the code in that time saw above code issues, I called my friend to bring gas I poured 1gal gas it did not work while waiting to figure out my core hybrid battery dead and trying jump start it did not work to start. I towed the vehicle home, I remember I brought 12v battery 5yrs back while removing the battery negative terminal got crack and leaking. Now I am trying to buy new 12v battery to install. Will any one guide me why my accelerate pedal not ignite on engine starting, I read 4 gallon gas needed. Let me know you thought/idea to start the back to normal plz.