AutoCodes – Generic – P15F2

P15F2 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 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 1,883

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 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 - Engine Torque Command Signal Message Counter Incorrect - AutoCodes.com — P15F2 Code - Engine Torque Command Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15F2?

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?

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 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.

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Information for Specific Makes

P15F2 Buick — Engine Torque Command Signal Message Counter Incorrect
P15F2 Cadillac — Engine Torque Command Signal Message Counter Incorrect
P15F2 Chevrolet — Engine Torque Command Signal Message Counter Incorrect
P15F2 GMC — Engine Torque Command Signal Message Counter Incorrect

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 Code

1. What are the common symptoms of OBDII code P15F2?

- Common symptoms include engine performance issues, such as lack of power, rough idling, and poor acceleration.

2. What does the OBDII code P15F2 indicate?

- OBDII code P15F2 indicates that the Engine Torque Command Signal Message Counter is incorrect, suggesting a communication error between modules.

3. What are the possible causes of OBDII code P15F2?

- Possible causes include damaged wiring or connectors, faulty torque sensor, issues with the Engine Control Module (ECM), or software glitches.

4. How can I diagnose OBDII code P15F2?

- Diagnosing OBDII code P15F2 typically involves using a diagnostic scanner to read the code, checking for any related codes, and inspecting the wiring and connectors for damage.

5. How can I repair OBDII code P15F2?

- Repairing OBDII code P15F2 may involve repairing or replacing damaged wiring or connectors, recalibrating or replacing the torque sensor, updating ECM software, or addressing any other underlying issues.

6. Can driving with OBDII code P15F2 cause further damage to the vehicle?

- Continuing to drive with OBDII code P15F2 may lead to further engine performance issues and potentially cause damage to other components over time.

7. Is it safe to ignore OBDII code P15F2 and continue driving the vehicle?

- Ignoring OBDII code P15F2 is not recommended, as it can impact the vehicle's performance and fuel efficiency. It is advisable to address the issue promptly.

8. How much does it typically cost to repair OBDII code P15F2?

- The cost to repair OBDII code P15F2 can vary depending on the underlying cause, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can I reset OBDII code P15F2 with a scan tool?

- Resetting OBDII code P15F2 with a scan tool may temporarily clear the code, but it is crucial to diagnose and address the root cause of the issue to prevent it from recurring.

10. Will OBDII code P15F2 cause my vehicle to fail an emissions test?

- Yes, OBDII code P15F2 can cause a vehicle to fail an emissions test due to its impact on engine performance and emissions control systems.