P0C4C OBD-II: Hybrid Battery Pack Coolant Pump Supply Voltage Circuit Low
P0C4C Severity
Should you fix P0C4C yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0C4C?
The Hybrid Battery Pack has its own dedicated Coolant Pump to circulate coolant through the battery pack. This coolant pump is controlled by the Hybrid Powertrain Control Module. If the coolant pump does not operate as requested, code P0C4C will be stored.
OBD II Fault Code
- OBD II P0C4C
OBD-II Code High voltage system may not operate is defined as a Hybrid Battery Pack Coolant Pump Supply Voltage Circuit Low
The Hybrid Battery Pack has its own dedicated Coolant Pump to circulate coolant through the battery pack. This coolant pump is controlled by the Hybrid Powertrain Control Module. If the coolant pump does not operate as requested, code P0C4C will be stored.
High voltage system may not operate Symptoms
- High voltage system may not operate
Common Problems That Trigger the P0C4C Code
- High voltage powertrain control module failure
- Leak in the high voltage cooling system
- Low coolant in the high voltage system
- Water pump failure
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