by The Geek | Aug 24, 2026 | Error Code Help
Seeing P3000 on a Toyota or Lexus hybrid can make it look like the high-voltage battery has failed. In reality, P3000 is usually a higher-level battery control system code that tells you the hybrid control system received an abnormal signal from the battery control... 
by The Geek | Aug 24, 2026 | Error Code Help
P0886 means the vehicle detected a low-voltage condition in the Transmission Control Module power relay control circuit. The Transmission Control Module, commonly called the TCM, needs a stable electrical power supply to operate the transmission correctly. Depending... by The Geek | Aug 24, 2026 | Error Code Help
P0562 means one of the vehicle’s control modules detected that the low-voltage electrical system dropped below the range expected for normal operation. On a hybrid, this usually refers to the 12-volt electrical system, not the high-voltage traction battery. The cause... by The Geek | Aug 24, 2026 | Error Code Help
P0517 means the vehicle detected an abnormally high electrical signal in the 12-volt battery temperature sensor circuit. On applicable Toyota and Lexus hybrids, this sensor monitors the temperature of the auxiliary 12-volt battery so the vehicle can adjust charging... 
by The Geek | Aug 24, 2026 | Error Code Help, Troubleshooting Help
If your Toyota Prius has dashboard lights but will not go into READY mode, the car has electrical power but the hybrid system has not successfully started. That does not automatically mean the high-voltage hybrid battery is dead. Possible causes range from a weak...