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P1E8C Code - Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage

- Code Popularity: 870 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1E8C?

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 P1E8C?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1E8C code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P1E8C Description

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.

OBDII Code P1E8C - Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage - AutoCodes.com
P1E8C Code - Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage

Need More Information on the Code?

Need more information on how to fix the P1E8C code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P1E8C Buick Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage
  • P1E8C Cadillac Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage
  • P1E8C Chevrolet Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage
  • P1E8C GMC Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage
  • P1E8C Saturn Hybrid/EV Battery Pack Coolant Pump Enable Circuit Low Voltage

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Code P1E8C comments

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