P0C14 - OBD II Trouble Code

January 31, 2017

Our automotive experts have put together the following information about the P0C14 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0C14 code.

OBD II Fault Code

  • OBD II P0C14

OBD-II Code High voltage system may not operate is defined as a Drive Motor "B" Inverter Phase U Over Temperature

The Drive Motor Generator Power Inverter Control Module consists of two Motor Control Modules and the Hybrid Powertrain Control Module. each Motor Control Module monitors the internal temperature of its respective motor. If the temperature of the motor goes above a specified temperature, code P0C14 is set. The High Voltage System will be disabled.

High voltage system may not operate Symptoms

  • High voltage system may not operate

Common Problems That Trigger the P0C14 Code

  • Coolant system leak
  • Drive motor generator power inverter control module failure
  • Engine cooling fan failure
  • Water pump failure

About the Author

Brad Kava is an automotive expert at RepairPal, the leading online source of auto repair resources and estimates. With many ASE Master certified mechanics on staff who have decades of experience, RepairPal knows all the fine points of car repair.

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