AutoCodes – GMC – P15F9 2017 GMC Sierra

P15F9 2017 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 2017 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 140

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 2017 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 2017 GMC Sierra - Hybrid/EV System Engine Speed Control Intervention Request Type Signal Message Counter Incorrect - AutoCodes.com — P15F9 2017 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 2017 GMC Sierra?

Check for Hybrid Codes

How to Fix the DTC P15F9 2017 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 2017 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 2017 GMC Sierra code?

Need more information on how to fix the P15F9 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15F9 2017 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 2017 GMC Sierra Code

1. What does the OBDII code P15F9 mean on a 2017 GMC Sierra?

The code P15F9 indicates an issue with the Hybrid/EV system, specifically a problem with the engine speed control intervention request type signal message counter being incorrect.

2. What are the common symptoms of the P15F9 code on a 2017 GMC Sierra?

Symptoms may include reduced engine performance, warning lights on the dashboard, or improper operation of the hybrid/EV system.

3. What causes the P15F9 code to appear on a 2017 GMC Sierra?

Common causes include software glitches in the control module, faulty communication between the hybrid control module and the ECM, or damaged wiring or connectors.

4. Can the P15F9 code cause drivability issues in my 2017 GMC Sierra?

Yes, it may cause reduced engine performance or limited functionality of the hybrid/EV system, potentially affecting overall drivability.

5. How can I troubleshoot the P15F9 code on my 2017 GMC Sierra?

Start by inspecting the wiring and connectors for damage, checking for software updates, and using a scan tool to monitor communication between modules.

6. Is the P15F9 code specific to hybrid or EV models of the 2017 GMC Sierra?

Yes, this code is related to the hybrid/EV system and does not apply to non-hybrid GMC Sierra models.

7. Can a software update fix the P15F9 code on a 2017 GMC Sierra?

In some cases, a software update for the ECM or hybrid control module can resolve the issue.

8. Do I need to replace any parts to fix the P15F9 code on my 2017 GMC Sierra?

Not necessarily. The issue could be due to software or communication errors, but if wiring or a module is faulty, replacement may be required.

9. Can I drive my 2017 GMC Sierra with the P15F9 code?

While it may be drivable, itâ€™s best to address the issue promptly to avoid further complications, especially if hybrid/EV functionality is impaired.

10. How much does it typically cost to fix the P15F9 code on a 2017 GMC Sierra?

Repair costs can vary widely, from $100â€“$200 for a software update to $500 or more if module replacement or extensive wiring repairs are needed.