AutoCodes – GMC – P15F9 2016 GMC Sierra

P15F9 2016 GMC Sierra Code - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect

Quick Answer

The Hybrid Powertrain Control Module is constantly sending serial data messages to the Engine Control Module (ECM) regarding the operating state of the powertrain propulsion system. Common causes include Check for Hybrid Codes. 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: P15F9 2016 GMC Sierra indicates Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect.
Common causes: Common causes include Check for Hybrid Codes.
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 199

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15F9 2016 GMC Sierra Description

The Hybrid Powertrain Control Module is constantly sending serial data messages to the Engine Control Module (ECM) regarding the operating state of the powertrain propulsion system. These messages are sent in a continuously repeating series of rolling counts with associated password protect samples. Each count/sample is assigned a value. The ECM uses the values, during a propulsion system mode shift, to determine when and at what RPM to idle the internal combustion engine. When the ECM determines that too many of the counts/samples contain an error value, the ECM sets DTC P15F9.

OBDII Code P15F9 2016 GMC Sierra - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect - AutoCodes.com — P15F9 2016 GMC Sierra Code - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15F9 2016 GMC Sierra?

Check for Hybrid Codes

How to Fix the DTC P15F9 2016 GMC Sierra?

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 P15F9 2016 GMC Sierra 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 P15F9 2016 GMC Sierra code?

Need more information on how to fix the P15F9 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15F9 2016 GMC Sierra 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 P15F9 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P15F9 in a 2016 GMC Sierra Hybrid/EV System?

The common symptoms of code P15F9 may include engine performance issues, reduced power, hesitation during acceleration, and in some cases, the vehicle may go into a limp mode.

2. What could cause the OBDII code P15F9 to appear in a 2016 GMC Sierra Hybrid/EV System?

The code P15F9 typically indicates that the Engine Speed Control Intervention Request Type Signal Message Counter is incorrect. Possible causes include a faulty hybrid/EV system component, wiring problems, or communication issues within the system.

3. How can I diagnose the OBDII code P15F9 in my 2016 GMC Sierra Hybrid/EV System?

Diagnosing code P15F9 requires using a professional OBDII scanner to retrieve the specific fault codes present in the system. Additionally, a thorough inspection of the hybrid/EV system components and related wiring may be necessary to pinpoint the exact cause.

4. Can I continue driving my 2016 GMC Sierra with the OBDII code P15F9 present?

It is not recommended to drive the vehicle with an active P15F9 fault code, as it can lead to further damage to the hybrid/EV system components and compromise the vehicle's performance and safety. It is advisable to address the issue promptly.

5. Are there any DIY repair tips for fixing the OBDII code P15F9 in a 2016 GMC Sierra Hybrid/EV System?

Repairing OBDII code P15F9 often requires specialized knowledge and equipment. Unless you are an experienced automotive technician, it is best to consult with a professional mechanic who has the expertise to diagnose and repair hybrid/EV system issues.

6. How much does it typically cost to repair the OBDII code P15F9 in a 2016 GMC Sierra Hybrid/EV System?

The cost of repairing code P15F9 can vary depending on the root cause of the issue, the extent of the damage, and the labor rates in your area. It is advisable to obtain multiple quotes from reputable repair shops to compare prices.

7. Can a software update fix the OBDII code P15F9 in my 2016 GMC Sierra Hybrid/EV System?

In some cases, a software update provided by the manufacturer may address the incorrect signal message counter associated with code P15F9. It is recommended to check with a dealership or authorized service center for any available updates.

8. How often does the OBDII code P15F9 occur in a 2016 GMC Sierra Hybrid/EV System?

The occurrence of code P15F9 can vary depending on the vehicle's usage, maintenance history, and other factors. It is considered a relatively rare code but should be addressed promptly to prevent further issues.

9. Is the OBDII code P15F9 a serious issue in a 2016 GMC Sierra Hybrid/EV System?

While code P15F9 may not always cause immediate drivability issues, it is a serious problem that can affect the performance and reliability of the hybrid/EV system in your 2016 GMC Sierra. Ignoring the code can lead to more significant problems over time.

10. How long does it take to repair the OBDII code P15F9 in a 2016 GMC Sierra Hybrid/EV System?

The repair time for code P15F9 can vary depending on the complexity of the issue, the availability of parts, and the mechanic's expertise. It is advisable to consult with your chosen repair facility for an accurate estimate of the repair duration.