AutoCodes – GMC – P0C9F GMC

P0C9F GMC Code - 14V Power Module Output Current Sensor Circuit High 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
P0C9F GMC indicates 14V Power Module Output Current Sensor Circuit High 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 512
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 P0C9F 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 P0C9F GMC - 14V Power Module Output Current Sensor Circuit High Current - AutoCodes.com
P0C9F GMC Code - 14V Power Module Output Current Sensor Circuit High Current

What are the Possible Causes of the DTC P0C9F 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 P0C9F 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 P0C9F 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 P0C9F GMC code?

Need more information on how to fix the P0C9F GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C9F 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 P0C9F GMC Code

1. What are the common symptoms of OBDII code P0C9F in a GMC vehicle?

The common symptoms of OBDII code P0C9F in a GMC vehicle include the check engine light being illuminated, reduced engine performance, and potential issues with the vehicle's power module.

2. What does the OBDII code P0C9F GMC indicate?

OBDII code P0C9F for GMC vehicles indicates a problem with the 14V Power Module Output Current Sensor Circuit showing high current.

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

Possible causes of the 14V Power Module Output Current Sensor Circuit high current issue include a faulty power module, damaged wiring or connectors, or a malfunctioning current sensor.

4. How can I diagnose the OBDII code P0C9F in my GMC vehicle?

Diagnosing the OBDII code P0C9F in your GMC vehicle typically involves using a diagnostic scanner to retrieve the fault code, inspecting the power module, checking the wiring and connectors, and testing the current sensor.

5. Can I continue driving my GMC vehicle with the P0C9F trouble code?

It is not recommended to continue driving your GMC vehicle with the P0C9F trouble code as it can lead to further damage to the power module and potentially affect the vehicle's performance.

6. How can the 14V Power Module Output Current Sensor Circuit high current issue be repaired?

Repairing the 14V Power Module Output Current Sensor Circuit high current issue may involve replacing the power module, repairing or replacing damaged wiring and connectors, or calibrating or replacing the current sensor.

7. Is it possible to reset the OBDII code P0C9F without fixing the underlying issue?

Resetting the OBDII code P0C9F without fixing the underlying issue is not recommended as the problem will likely reoccur, and it may lead to more severe issues in the future.

8. Can a DIY enthusiast fix the 14V Power Module Output Current Sensor Circuit high current problem?

While some DIY enthusiasts may have the skills to diagnose and repair the 14V Power Module Output Current Sensor Circuit high current problem, it is recommended to seek professional help due to the complexity of the repair.

9. How much does it typically cost to repair the 14V Power Module Output Current Sensor Circuit high current issue?

The cost of repairing the 14V Power Module Output Current Sensor Circuit high current issue can vary depending on the extent of the problem, the parts needed for replacement, and the labor costs of the repair shop.

10. Are there any preventive measures to avoid the OBDII code P0C9F in a GMC vehicle?

Regular maintenance checks, avoiding overloading the vehicle's electrical system, and promptly addressing any warning signs can help prevent issues like the OBDII code P0C9F in a GMC vehicle.

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