PVC hose or O2 sensor

It was jumping when idle. It overheated at one point and had a leak with the antifreeze. This is when I took it in the first time. They said that it was the hydro pump and O2 sensor. Fuel injector error was coming up. Hydro pump had a recall so it was paid for. We just paid for the O2 sensor. Then, I got an OBD scan while I was getting the oil changed and 7 showed up - sames as before. It never did seem fixed. He said to wait and call back after two weeks if it was still having issues, but then I had the seizure and was in the hospital and could not really drive it much. Then it started getting worse. That is why I took it back again.

Thank you!