Hi fault code on my prius! Suggest its transaxle! Any suggestions? Can it be also hybrid battery? Thanks
From the 2010 DTC chart: P0AA6-526 Hybrid Battery Voltage System Isolation Fault - Hybrid vehicle transaxle assembly - Generator cable - Motor cable - Inverter with converter assembly - Frame wire - No. 2 engine wire - Hybrid battery junction block assembly - Compressor with motor assembly - HV battery - Battery smart unit P0AA6-613 Hybrid Battery Voltage System Isolation Fault - Hybrid vehicle transaxle assembly - Motor cable - Generator cable - Inverter with converter assembly The way I read this the P0AA6 is the basic Hybrid Battery Voltage System Isolation Fault. This indicates a Ground Fault on the HV Battery system. The 526 Sub Code lists all of the devices on the HV Battery System. The 613 Sub Codes seems to narrow this down to 4 possible devices, one of these being the Transaxle. You would need to test each of these circuits to determine which one has the Ground Fault. I could not find the Air Conditioner B1423 code but this could be indicating that the AC compressor motor could be the ground fault culprit. Once again you would have to do a process of elimination by isolating and testing each device to determine the source of the ground fault.
