AutoCodes – GMC – P0C9E GMC

P0C9E GMC Code - 14V Power Module Output Current Sensor Circuit Low Current

Quick Answer

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator Control Module 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
P0C9E GMC indicates 14V Power Module Output Current Sensor Circuit Low Current.
Common causes
Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator Control Module 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.
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Code Popularity 572
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 21, 2019
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Code P0C9E GMC Description

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.
The 14V power module has 2 current sensors, one for input and one for output current measurements. This diagnostic checks the output current sensor. These current sensors are internal to the 14V power module and are not serviced separately from the generator control module.
OBDII Code P0C9E GMC - 14V Power Module Output Current Sensor Circuit Low Current - AutoCodes.com
P0C9E GMC Code - 14V Power Module Output Current Sensor Circuit Low Current

What are the Possible Causes of the DTC P0C9E GMC?

  • Faulty Starter Generator Control Module
  • Starter Generator Control Module harness is open or shorted
  • Starter Generator Control Module circuit poor electrical connection

How to Fix the DTC P0C9E GMC?

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 P0C9E GMC 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 P0C9E GMC code?

Need more information on how to fix the P0C9E GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C9E GMC 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 P0C9E GMC Code

1. What are the common symptoms of OBDII code P0C9E in a GMC vehicle?

- Common symptoms include illuminated Check Engine Light, reduced engine power, poor vehicle performance, and potential stalling.

2. What does the OBDII code P0C9E in a GMC indicate?

- The code P0C9E indicates a problem with the 14V Power Module Output Current Sensor Circuit showing low current.

3. What are the possible causes of the 14V Power Module Output Current Sensor Circuit low current issue?

- Possible causes include a faulty power module, damaged wiring or connectors in the circuit, or a malfunctioning current sensor.

4. How can I diagnose the OBDII code P0C9E related to the 14V Power Module Output Current Sensor Circuit in my GMC?

- Diagnosis involves using a scan tool to retrieve the code, inspecting the wiring and connectors for damage, testing the current sensor, and checking the power module.

5. Can I continue driving my GMC with the P0C9E trouble code present?

- It is not recommended to continue driving with the P0C9E code active, as it can lead to further damage and potential safety hazards.

6. How can I repair the 14V Power Module Output Current Sensor Circuit low current issue in my GMC?

- Repairs may involve replacing the faulty power module, repairing or replacing damaged wiring or connectors, or replacing the current sensor as needed.

7. Is it possible to reset the OBDII code P0C9E in a GMC without fixing the underlying issue?

- While you can clear the code with a scan tool, it is crucial to address the root cause of the problem to prevent future occurrences and ensure proper vehicle operation.

8. Are there any safety precautions to consider when working on the 14V Power Module Output Current Sensor Circuit in a GMC?

- Always disconnect the vehicle's battery before working on electrical components, wear appropriate safety gear, and follow manufacturer guidelines for handling sensitive electronic parts.

9. Will the OBDII code P0C9E in a GMC reset itself after the issue is resolved?

- In most cases, the code will clear itself after the underlying problem is fixed, but it may take several driving cycles for the vehicle's computer to register the repair and turn off the Check Engine Light.

10. Can a DIY enthusiast with basic automotive knowledge fix the 14V Power Module Output Current Sensor Circuit low current issue in a GMC?

- While some DIY enthusiasts may be able to address this issue, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the problem is resolved correctly.

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