OBD II Fault Code

  • OBD II P0A7C

OBD-II Code High voltage system may overheat is defined as a Motor Electronics Over Temperature

The Motor Electronics Coolant Temperature Sensor monitors the temperature of the hybrid coolant system. If the coolant temperature gets too hot, the engine control module (PCM) will set code P0A7C.

High voltage system may overheat Symptoms

  • High voltage system may overheat

Common Problems That Trigger the P0A7C Code

  • Converter failure
  • High voltage control module failure
  • Hybrid transaxle assembly failure
  • Motor electronics coolant temperature sensor failure
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