Engine-Codes - Gmc - P0CE9 GMC

P0CE9 GMC Code - Hybrid/EV Electronics Coolant Pump Control Circuit

- Code Popularity: 549 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0CE9 GMC Code?

  • Faulty Hybrid/EV Electronics Coolant Pump
  • Hybrid/EV Electronics Coolant Pump harness is open or shorted
  • Hybrid/EV Electronics Coolant Pump circuit poor electrical connection

|How to Fix the P0CE9 GMC Code?

Start by checking 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's pins.

|What is the cost to diagnose the P0CE9 GMC code?

Labor: 1.0

The cost to diagnose the P0CE9 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0CE9 GMC code possible symptoms?

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

|What Does the P0CE9 GMC Code Mean?

The hybrid/EV electronics coolant pump circulates coolant through the power electronics coolant radiator, hybrid/EV powertrain control module 1 and the battery charger to control the temperature of the hybrid/EV powertrain control module 1 and the battery charger. An enable signal from the hybrid/EV powertrain control module 2 to the hybrid/EV electronics 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 electronics coolant pump. The higher the duty cycle the higher the pump speed. The hybrid/EV electronics 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. The hybrid/EV electronics coolant pump has some self-diagnostic capability. If it determines there is an internal fault it provides this information on this same feedback circuit instead of pump speed information.

Hybrid/EV Electronics Coolant Pump Control Circuit

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