Multiple codes on new prius

The first two mean the DC-DC converter isn't working, and in particular, that it probably isn't charging the 12V battery. Measure the voltage on that (at the jump point under the hood will be fine) and tell us what it is when the car is off and when it is on. The second two codes often mean the ICE isn't starting at all. That can happen if the HV battery is nearly fully discharged. Hard to see how that could be right if you are able to drive it around though.

If you have a decent OBD2 dongle then you could read the pack voltages using an app like Dr. Prius or Torque Pro. Do that soon and report them back here.

Guessing, because there is not all that much info to work with yet, I would suspect the "new hybrid battery" isn't working right. If it is a name brand aftermarket (Green Bean or something like that) they should be willing to check it out under warranty. What was the source of this vehicle? Dealer, used car dealer, private sale?

 

are you sure the engine is starting? have you tried driving it again?

 

no, I wouldn't. cutting off after 10 seconds usually means the battery is spinning the engine, but it isn't starting, they sound about the same.
and continually trying to start it will drain the hybrid battery, causing the need for a special starter and possibly harming the battery.
look up the codes online, and follow the troubleshooting and repair advice

 

it could be that the battery is already too low, but there are a myriad of reasons the engine might not start, like any gas engine.
are you sure there's fuel in the tank? you might need to add 4 or 5 gallons, gen 2 prius has a tank bladder, and the gauge isn't always correct.

 

Here are links to the service manual for the P0A08 and P0A09 codes:
P0A08 — 2005 Toyota Prius L4-1.5L (1NZ-FXE) Hybrid Service Manual | Operation CHARM
DTC 265 — 2005 Toyota Prius L4-1.5L (1NZ-FXE) Hybrid Service Manual | Operation CHARM
DTC 591 — 2005 Toyota Prius L4-1.5L (1NZ-FXE) Hybrid Service Manual | Operation CHARM
The problem is either the wiring harness between the hybrid vehicle control ECU and the inverter, OR, the inverter itself.

Like already stated in post #6, the car is not starting. It sounds like it started, but what is happening is the motor that is trying to start the car times out and stops trying which sounds like the car stalls. This is your main issue to solve before worrying about the P0A08 and P0A09 codes. The first thing to try is clean the throttle body.

 

For the OBD2 dongle refer to this page for ones which work with Dr. Prius:

Dr. Prius App - OBD2 to buy

(I have a Veepeak which also works nicely with Torque Pro, once the Prius specific PIDs are loaded.)

Or get an Autel AP200, which with its own software, provides capabilities similar to Techstream.

I would hope that either one of those would provide more error codes which might suggest why the gas motor isn't starting. If they don't it is back to air, spark, fuel, like any other gas fueled vehicle. Since you hear the motor spinning you can probably rule out the equivalent of a starter failure. That said, you need to read the HV voltages soon - running that battery down will make things even more difficult.

If you don't have a digital multimeter you will need to get one of those too. Not to measure the voltages in the HV pack (you would be dealing with Green Bean if that is the problem) but to make sure 12V (when running, actually somewhere between 13.1V and 14.5V) is going where it should, and to check for continuity and shorts.

Was the vehicle from a rural location? Rodent damage to car wiring is pretty common in those locales.