Please bear with me as I had a very rough year so this 05 prius has been sitting for about a year and I really need to get it sold and out of my yard. Car was running rough July 2022. I live in Texas so it was super hot and any idling condition would drain HV battery and also sounded really bad like a repeated but not perfectly timed "shaking and upset" car sound.The car does and always has burned a lot of oil, but I checked it monthly and just accepted I'd have to add an extra quart every so often. I checked codes and got a misfire cyl 3. I changed that spark plug. Took it for a test drive and it just shut down. I got "bad HV battery codes" which didn't seem too off base because it's an older car, it's been hot, etc. I have I greentec come out and replace the HV battery and 12v battery. However, the car immediately starts running down the new hv battery until it dies.. They send a tech same day which I really appreciate and he puts in a new one. Same thing happens. They say I really need to take it to a dealership. I realized too late that the gas engine was not turning on and so I was basically just running down the brand new expensive HV battery. Life got rough for me after that and since I live out in the country with my daughter, I just had to shelve fixing the prius and get a different car to get my daughter to school which was weeks away. The car has been sitting since, but I would really like to fix it and sell it if possible or get it out of my front yard. So, I did have a friend come last year who was able to get codes after getting ICE or enough juice basically to get codes before it died the final time and I was out of money and time to have a working car. It did seem to make sense that a new HV battery was due because I had issues with Dr. Prius showing that my cells were failing. A friend tried to fix that and I thought maybe it wasn't successful long term so it would make sense to do a full HV change out. Plus it had been so hot and I replaced it a couple years prior. Definitely time and with the codes I got it did seem worth it to spend the money on an otherwise reliable car that I've loved. I was still getting 42 mpg and I love that car. One weird thing that occurred to me was that right before all of these problems I filled the tank up, but my car was pushing the nozzle out even when it wasn't filled and it did it repeatedly. I hate pumping gas so I kept forcing it to just get properly filled up and thought maybe it was the pumps fault. Maybe not though because I did eventually get a code that indicated there's an issue with my gas or gas tank or where fuel is stored? Codes I got at first * Cylinder misfire codes P0353 then I replaced all spark plugs and got new errors. I may have effed this up here, but I've done it before and I didn't think I did it horribly wrong. When I've done it before it was pretty easy and simple. Codes I got when it died * PA080 * I can't remember the numbers it but the code that says "failed to start" essentially Codes I got when friend was able to get enough juice after dying to get codes part a * P0171 which was weird because it seemed to be related to possible fuel issues (and also the gas engine wont start) *P3190 Poor engine power. Here is where I tried to look at throttle body, maf sensor, and figure out why gas won't start. * P0456 Small Evap leak. Codes I got when friend was able to get enough juice after dying to use a scantool part b Throttle body codes that may be before or after I cleaned maf sensor and throttle body. I was very careful and nothing seemed dirty or off. Cleaning this stuff also didn't change the outcome so... * P0122 throttle position sensor ( i did learn that the TPS is part of the whole throttle body assembly which at the time was on backorder and 360ish from Toyota) * P0123 throttle position sensor * P0222 Throttle/Pedal Position Switch/Sensor B Circuit Low Input (I'll be honest here, I didn't understand how to use my multimeter to diagnose this from the service manual. I've never really used or understood how?) * P0223 Throttle/Pedal Position Sensor/Switch B Circuit High Input * P2135 Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation Things I tried * New HV battery from greentec x2 when it died immediately after the new one * New 12v battery * New spark plug for slot 3 * New ignition coil for slot 3 which I was unable to get the bank 3 code moved to. I mean I changed out 3 with 4 to see if I would get the same error, and it wouldnt move to the new bank * Cleaned throttle body * Cleaned maf sensor * New gas cap based on evap code leak How should i proceed? I am in the dfw area. Obviously I need an hv charging situation because I can't even start the car without draining the traction battery. I also have a trickle charger for the 12v ( I know this is probably dead at this point, but I can charge that) and at this point I haven't done anything else in a year, but both traction and 12v battery were new so that isn't an issue. I can buy a charger, I am a little lost on the best and most cost effective option to at least make sure the HV battery can get recharged if the gas isn't powering on to charge it. I am worried about the tps sensor being maybe the issue, but it's part of the whole throttle body assembly so I was hesitant to order that.and I also am unsure what might be the best way to start. I am so sorry this is a huge mess I'm asking for advice on, but anything you've got I'd really appreciate.It was also weird that t seemed that the last gas refill seemed to kick off problems with the pump ejecting itself even when I had 1/4 tank. I know that I need to charge the 12lv asap and also charge the hv.. Then I can attempt to troubleshoot why the gas engine isn't turning on to then charge the HV. My understanding is that the 12v kicks on a little power to start the lights and the idea of starting which should signal the gas part to start.. Then Gas should kick on which then is able to work alongside hybrid to charge the battery and then to also preserve gas by using the hybrid part. If the gas engine won't kick on then the hybrid battery depletes rapidly with each attempt to start. I'd really just appreciate some direction on where to move from here. I live in Johnson county in a pretty rural area so other than the dealership 40 min from me, I haven't had any real good options. Especially because the Burleson toyota will I'm sure be more than it's worth to have towed, diagnosed. I have techstream. Not on this laptop but I can set that up. I have a VCI cable. I have a good variety of tools or the ability to get more. I have muscle if I need it. I just need some direction. Thank you so much for reading.