AutoCodes – GMC – P15F2 2015 GMC Sierra

P15F2 2015 GMC Sierra Code - Engine Torque Command Signal Message Counter Incorrect

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine 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: P15F2 2015 GMC Sierra indicates Engine Torque Command Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine 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 330

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 P15F2 2015 GMC Sierra Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately. The hybrid powertrain control module sends an engine torque requested message to the ECM over the serial data circuits. The ECM monitors the data to verify the indicated engine torque requested calculation is correct. The ECM processor monitors the data to verify that the engine torque command is correct. The Diagnostic Trouble Code (DTC) will be set when the control module has detected an internal malfunction.

OBDII Code P15F2 2015 GMC Sierra - Engine Torque Command Signal Message Counter Incorrect - AutoCodes.com — P15F2 2015 GMC Sierra Code - Engine Torque Command Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15F2 2015 GMC Sierra?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P15F2 2015 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 P15F2 2015 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 P15F2 2015 GMC Sierra code?

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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 P15F2 2015 GMC Sierra Code

1. What does the OBDII code P15F2 mean on a 2015 GMC Sierra?

P15F2 indicates an "Engine Torque Command Signal Message Counter Incorrect" issue, often related to communication errors between the engine control module (ECM) and other vehicle systems.

2. What are the symptoms of code P15F2 in a 2015 GMC Sierra?

Common symptoms include reduced engine performance, the check engine light turning on, and occasional transmission shifting issues.

3. What causes the P15F2 code to appear?

The code can be caused by faulty wiring, issues with the ECM, a malfunctioning powertrain control module (PCM), or corrupted data signals.

4. Can I drive my 2015 GMC Sierra with the P15F2 code?

It is not recommended to drive for extended periods, as the issue can affect engine performance and lead to further damage if not addressed.

5. How do I diagnose the P15F2 code on my GMC Sierra?

Perform a visual inspection of the wiring and connectors, scan for other related codes, and check for communication issues between the ECM and PCM.

6. What repairs are typically needed to fix the P15F2 code?

Repairs may include fixing or replacing damaged wiring, updating or reprogramming the ECM or PCM, or replacing a malfunctioning module.

7. Can a software update fix the P15F2 code?

Yes, in some cases a software update or reprogramming of the ECM or PCM can resolve the issue if itâ€™s related to corrupted data or outdated software.

8. How much does it cost to fix the P15F2 code on a 2015 GMC Sierra?

Repair costs can range from $100 for minor wiring repairs to over $1,000 if module replacement or extensive diagnostics are required.

9. Is the P15F2 code related to other engine or transmission codes?

It can be, as it involves communication between the ECM and other control modules. Additional codes may help pinpoint the root cause.

10. What tools are needed to diagnose and fix the P15F2 code?

You'll need an OBDII scanner, a multimeter to test wiring, and potentially manufacturer-specific diagnostic tools for reprogramming or module testing.