Engine-Codes - Generic - P0C4A

P0C4A Code - Hybrid/EV Battery Pack Coolant Pump Performance

- Code Popularity: 4,887 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0C4A?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Hybrid/EV Battery Pack Coolant Pump
  • Hybrid/EV Battery Pack Coolant Pump harness is open or shorted
  • Hybrid/EV Battery Pack Coolant Pump circuit poor electrical connection
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How to Fix the DTC P0C4A?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0C4A code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0C4A Code Mean?

The hybrid/EV battery pack coolant pump circulates coolant through the drive motor battery coolant radiator, drive motor battery coolant cooler and the hybrid/EV battery pack to control the temperature of the hybrid/EV battery pack. An enable signal from the hybrid/EV powertrain control module 2 to the hybrid/EV battery pack coolant pump provides overall control of the pump. When this circuit is high, the pump can operate. The pump is controlled with a pulse-width modulated signal from the hybrid/EV powertrain control module 2 to the hybrid/EV battery pack coolant pump. The higher the duty cycle the higher the pump speed. The hybrid/EV battery pack coolant pump provides a hard-wired pulse-width modulated feedback signal to the hybrid/EV powertrain control module 2. During normal operation, this feedback signal provides pump speed information to the hybrid/EV powertrain control module 2. The hybrid/EV battery pack coolant pump has some self-diagnostic capability. If the hybrid/EV battery pack coolant pump determines there is an internal fault it provides this information on this same feedback circuit instead of pump speed information.

P0C4A Code - Hybrid/EV Battery Pack Coolant Pump Performance

Need more Information on the Code?

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Code P0C4A Information for Specific Makes

  • P0C4A Buick Hybrid/EV Battery Pack Coolant Pump Performance
  • P0C4A Cadillac Hybrid/EV Battery Pack Coolant Pump Performance
  • P0C4A Chevrolet Hybrid/EV Battery Pack Coolant Pump Performance
  • P0C4A GMC Hybrid/EV Battery Pack Coolant Pump Performance
  • P0C4A Saturn Hybrid/EV Battery Pack Coolant Pump Performance

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