AutoCodes – Saturn – P0CE9 Saturn

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

Quick Answer

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. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0CE9 Saturn indicates Hybrid/EV Electronics Coolant Pump Control Circuit.
Common causes
Common causes include 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.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 782
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 26, 2020
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Code P0CE9 Saturn Description

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.
OBDII Code P0CE9 Saturn - Hybrid/EV Electronics Coolant Pump Control Circuit - AutoCodes.com
P0CE9 Saturn Code - Hybrid/EV Electronics Coolant Pump Control Circuit

What are the Possible Causes of the DTC P0CE9 Saturn?

  • 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 DTC P0CE9 Saturn?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0CE9 Saturn code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0CE9 Saturn code?

Need more information on how to fix the P0CE9 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0CE9 Saturn code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0CE9 Saturn Code

1. What are the common symptoms of OBDII code P0CE9 in a Saturn hybrid/EV?

- Common symptoms include the check engine light illuminating, reduced engine power, overheating, and potential issues with the coolant system.

2. What could cause the OBDII code P0CE9 to appear in a Saturn hybrid/EV?

- Possible causes could include a malfunctioning coolant pump, a faulty control module, damaged wiring, or a problem with the coolant pump control circuit.

3. How can I diagnose the OBDII code P0CE9 in my Saturn hybrid/EV?

- Diagnosis typically involves using a diagnostic scanner to read the code, inspecting the coolant pump and related components, checking the wiring for damage, and testing the control module.

4. Is it safe to continue driving with the OBDII code P0CE9 in my Saturn hybrid/EV?

- It is not recommended to drive your vehicle with this code as it can lead to engine overheating and potential damage. It's best to address the issue promptly.

5. How can I repair the OBDII code P0CE9 in my Saturn hybrid/EV?

- Repair options may include replacing the coolant pump, repairing or replacing damaged wiring, resetting the control module, or addressing any other identified issues with the coolant pump control circuit.

6. Can I reset the OBDII code P0CE9 in my Saturn hybrid/EV myself?

- You may be able to reset the code using a diagnostic scanner, but it's important to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any preventive maintenance tips to avoid OBDII code P0CE9 in a Saturn hybrid/EV?

- Regularly inspecting the coolant system, maintaining proper coolant levels, and addressing any cooling system issues promptly can help prevent this code from appearing.

8. How much does it typically cost to repair OBDII code P0CE9 in a Saturn hybrid/EV?

- The cost of repair can vary depending on the specific issue causing the code and the labor rates in your area. It's best to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast with basic car repair skills fix the OBDII code P0CE9 in a Saturn hybrid/EV?

- Depending on the specific issue, a DIY enthusiast with knowledge of electrical systems and car repair may be able to address the code, but it's essential to proceed with caution and follow proper procedures.

10. Is the OBDII code P0CE9 specific to Saturn hybrid/EV vehicles, or can it occur in other makes and models?

- While this code is associated with Saturn hybrid/EV vehicles, similar issues with the coolant pump control circuit can potentially occur in other hybrid/EV models as well.

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