2005 Prius Transmission or Water Pump?

There is a chance the inverter water pump is bad, it's common for this to fail on the Prius. Unfortunately dealers charge really high labor rates to replace this part. $700+ now.

 

With your car sitting there open the hood open the little reservoir right next to the big silver thing on the driver side of the car to the left of that is a jug that holds coolant It's usually red or pink this feeds your inverter pump which cools that silver inverter that says hybrid system on the silver lid If you open the lid on that reservoir is the reservoir full to the line on said jug If you open the door and ready the car get out and look at the jug you should see some water moving in the jug like something's moving it a pump You should also hear that pump it'll be down near the driver side headlight You can reach your hand down there and touch it and it'll be vibrating if it's running If it's not it's probably bad usually this is the company by the little car that's usually green in the left of that 7-in display will usually turn red and then other lights will come on on the dash and if you look in the fuse box and check the AM2 fuse maybe it's blown If it is usually the inverter pump is gone bad blown the AM2 fuse turn the red car on the MFD 7-in display red and other lights may come on the dash. Usually the slipping when you step on the gas and you get revs but no forward movement that usually is the hybrid battery causing that problem You're hybrid battery could be going bad with age along with the inverter pump failing this is highly likely and possible.

 

While you still can, see if you can contact them and tell you what code they got. That is much more important for us to know than anything a guy said the code was "for".

 

Probably means P0A93 (that's a zero after the P, not letter O).

P0A93 is a code for the inverter cooling system. It has an electric pump of its own (separate from the engine water pump). The pump for the inverter cooling system is kinda behind the left headlight.

The code can also be caused by a cooling fan problem. Or by a clog in the coolant passages. A lot of the time, it's the pump. They wear out.

If somebody has a scan tool that reads INF codes, if I remember right, P0A93 has a couple different INF codes that would point to different areas for the problem.

 

It's quite often the pump, so not a bad guess, playing the odds. A mechanic worth the salt would have checked. It's pretty easy to check for the pump running (look at all the threads you can search up here with: pump turbulence).