EMERGENCY? inverter coolant pump failure (P0A93)

Presuming the code was cleared & has now reappeared I'd find the closest dealer & talk to them. I suspect air was not purged from the inverter coolant or the coolant is low. Get it fixed now before any real damage is caused.

 

You definitely need to have your car looked at now as it is unlikely the car will make a 240 mile highway trip in summer weather without failing along the way. The symptoms you posted make it sound like the inverter is overheating again.

While waiting for your service visit, I suggest you make the car IG-ON (not READY, where all the dashboard warning lights are on) and see if you can:

1) hear the inverter coolant pump running, located behind the driver's headlamp assembly. If no, the pump is the problem. If yes,

2) do you hear air bubbles in the system? (that would mean that air is in the system and needs to be purged out)

3) You can also look at the inverter coolant reservoir to see if there is turbulence in the fluid. If yes, that shows you have good coolant circulation, and the problem is not due to the inverter coolant pump.

 

it seems that when the car stops cooling heated air conditioning, turn on the lights after error with red triangle,,, and then we begin to stop. The next day the car works again perfectly,,, until it starts to warm up again after an hour of use. and always the same problem. And will replace the small battery, and water pump Hybrid system, I can please help solve this problem .... Thanks!

 

Follow what Patrick Wong is suggesting in the other thread.

Code P0A93 | PriusChat

 

Good morning !
Please I need your help to solve the problem of my Toyota Prius car in 2008. The car is cold while working well for a maximum time of 1 hour, the first symptom is to stop the air conditioner to cool, then turn on the light triangle warning, after driving a little longer for the vehicle and no more moves. If you wait until the vehicle returns to work for a few minutes to cool, then everything fails again with the same symptoms. And you change the battery 12 Volt, and you change the water pump hybrid system and I can not solve! Please I ask you to help me to run my car .... thank you very much!

 

Juan, follow Patrick's advice:

Make the car IG-ON (not READY, where all the dashboard warning lights are on) and see if you can:

1) hear the inverter coolant pump running, located behind the driver's headlamp assembly. If no, the pump is the problem. If yes,

2) do you hear air bubbles in the system? (that would mean that air is in the system and needs to be purged out)

3) You can also look at the inverter coolant reservoir to see if there is turbulence in the fluid. If yes, that shows you have good coolant circulation, and the problem is not due to the inverter coolant pump.

 

Please help me out i have a prius 2004 in which runs good no problem on it, recently around 3 months i replace the P0A93 code the inverter pump the electric one in the fender with a new dealer one and 6 months earlier i replace the other pump down the fuse box the car. my car runs well but after all day using it long tris around town the vsc lights and red triangle lights up, i scan the car and no codes on it, then next day still the same and after driving it a little lights get off if i drive the car in short trips no problem but then after driving long ones lights come on again, then also get the car scan and the code P0A93 return but the part already replace recently, also i try to purge the system but the same problem can someone help me out on getting this solve????im in mexico city no one in the country knows about this cars and this car was not sold in mexico

 

Please help me out i have a prius 2004 in which runs good no problem on it, recently around 3 months i replace the P0A93 code the inverter pump the electric one in the fender with a new dealer one and 6 months earlier i replace the other pump down the fuse box the car. my car runs well but after all day using it long tris around town the vsc lights and red triangle lights up, i scan the car and no codes on it, then next day still the same and after driving it a little lights get off if i drive the car in short trips no problem but then after driving long ones lights come on again, then also get the car scan and the code P0A93 return but the part already replace recently, also i try to purge the system but the same problem can someone help me out on getting this solve????im in mexico city no one in the country knows about this cars and this car was not sold in mexico

 

Look into the filler tube of the inverter reservoir with the car in IG-ON mode (push button twice, foot off brake). Can you see the coolant flowing? You will need good light to see this. You should also be able to hear the slight hum of the pump.

If the coolant is flowing, check the radiator fan.

I don't understand in your post where you said you replaced the pump "down the fuse box." Maybe a translation error. You also said you replaced the one in the fender--sounds like the same pump.

 

If you stop and let it cool does it work again for an hour again? If you charge your 12V battery and don't run any fans or headlights it might last longer...or brakes, heh. Replacing the pump "should" fix it, if there's enough coolant, does it seem that the pump is working? Any resolution?

 

You're reviving a 14 thread that was subsequently revived 8-years ago?

The OP was last seen on PC 3 years ago.