2008 prius codes c1310 p0A78 p0A7A

DTC P0A78 is posted by the hybrid vehicle ECU and indicates a problem with the inverter, the hybrid vehicle ECU or the wiring harness connecting them.
DTC P0A7A also is posted by the HV ECU and indicates a problem with the inverter or the wiring harness.
DTC C1310 is posted by the skid control ECU and indicates that a problem with the hybrid drivetrain.

I would start by looking for physical damage to the inverter or its wiring harness.

 

welcome! who repaired it? insurance involved? you need a dealer or qualified hybrid shoppe. if all else fails, check out luscious garage.

 

Maybe - but first do the troubleshooting tree as mentioned below.

If you want to DIY I recommend you obtain the factory repair manual info at techinfo.toyota.com so that you can follow the troubleshooting tree for the logged DTC. That explains what to check. You need a digital multimeter so that you can measure resistance and voltage.

 

Send me a PM and I will give you a link to the repair manual.

JeffD

 

Hi

Im desperate im in mexico city i have a prius 2004 this car was not sold in mexico, mechanics dont know how works a hybrid not even in the toyota dealer PLEASE HELP ME OUT i have this issue for sometime with it

1 year ago i replace the water pump the electric inverter water pump the one in front of the inverter left side back the headlight
car work fine
then i replace the coolant inverter pump 6 months ago the one in the left driver side in front the tire
I already replace the thermostat
replace all the coolant
replace the radiator cap
Car doesnt get hot no issues on that

- Daily i drive the car around 30 miles no issue in the morning and 30 miles at night no issue on the car no codes no lights in the dash no nothing.
- If i use the car all day long first appears the red triangle the lights abs and the VSC no problems in the car work fine after a while the brake sign lights up and then a biiiiiiiip sound apears so i need to shut the car off and then the biip goes away and the warnings still in the dash
- so in city car works well in regular home work without lights if car works all day warnings in dash
- If i get the car in highway to another city in an uphill road after hours the car has not power to go up and i need to wait for a while to get on the road again then stop and then wait and so on


My codes are the following
-P1116 ( in which i look around and probably i need to replace the temperature sensor TX109 and the coolant temperature sensor TX221) do i replace them?????
- C1241 searching seems the aux battery not working i already check it out in an optima dealer and they told me is working fine
- P0A7A tells on the inverter performance its necessary i replace it???? really is very expensive and plus the shipping into mexico more some guy tell me replace all the relays on the car not sure about that???? or do i need to replace the HV ecu?????
- PA093 inverter pump which i already replace it twice??????


REALLY WONDERING TO SOMEONE HELP i have spent a lot and the car is the same im a student and i have no money i dont want to trash the car but really i dont know what to do



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