AutoCodes – Chevrolet – P15F8 Chevrolet

P15F8 Chevrolet Code - Automatic Braking Engine Torque Request Signal Message Counter Incorrect

Quick Answer

The Electronic Brake Control Module (EBCM) and The Engine Control Module (ECM) simultaneously control the vehicle performance. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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: P15F8 Chevrolet indicates Automatic Braking Engine Torque Request Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake 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 2,323

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 Aug 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15F8 Chevrolet Description

The Electronic Brake Control Module (EBCM) and The Engine Control Module (ECM) simultaneously control the vehicle performance. During an automatic brake event, the electronic brake control module sends a serial data message to the engine control module requesting torque reduction. If the engine control module receives corrupt data from the electronic brake control module, Diagnostic Trouble Code (DTC) P15F8 will be set in the engine control module. The engine control module then sends a serial data message to the electronic brake control module that torque reduction is not allowed. The DTC will be set when the ECM detects a corrupted data message from the electronic brake control module.

OBDII Code P15F8 Chevrolet - Automatic Braking Engine Torque Request Signal Message Counter Incorrect - AutoCodes.com — P15F8 Chevrolet Code - Automatic Braking Engine Torque Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15F8 Chevrolet?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection

How to Fix the DTC P15F8 Chevrolet?

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 P15F8 Chevrolet 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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Need more information on how to fix the P15F8 Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P15F8 2014 Chevrolet Silverado — Automatic Braking Engine Torque Request Signal Message Counter Incorrect
P15F8 2015 Chevrolet Silverado — Automatic Braking Engine Torque Request Signal Message Counter Incorrect
P15F8 2016 Chevrolet Silverado — Automatic Braking Engine Torque Request Signal Message Counter Incorrect
P15F8 2017 Chevrolet Silverado — Automatic Braking Engine Torque Request Signal Message Counter Incorrect
P15F8 2018 Chevrolet Silverado — Automatic Braking Engine Torque Request 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 P15F8 Chevrolet Code

1. What are the common symptoms of OBDII code P15F8 in a Chevrolet related to the Automatic Braking Engine Torque Request Signal Message Counter Incorrect?

- Common symptoms include the Check Engine Light (CEL) illuminating, decreased engine performance, and potential issues with the automatic braking system.

2. What can cause the OBDII code P15F8 to trigger in a Chevrolet?

- This code is typically triggered by a discrepancy in the signal message counter related to the engine torque request for automatic braking functions.

3. How serious is the OBDII code P15F8 in a Chevrolet?

- While the vehicle may still be operable, it is recommended to address this code promptly to ensure proper functioning of the engine torque request signal for automatic braking.

4. Can driving with the OBDII code P15F8 in a Chevrolet cause further damage?

- Continuing to drive with this code may potentially lead to performance issues with the engine torque request signal, affecting automatic braking functionality over time.

5. How can I diagnose and repair the OBDII code P15F8 in my Chevrolet?

- Diagnosing and repairing this code may require using a diagnostic scanner to analyze the signal message counter and address any issues with the engine torque request system.

6. Is it safe to reset the OBDII code P15F8 in a Chevrolet without addressing the underlying issue?

- While resetting the code may temporarily turn off the CEL, it is not recommended as the root cause of the signal message counter discrepancy should be diagnosed and repaired.

7. Are there any DIY repair tips for the OBDII code P15F8 in a Chevrolet?

- DIY repair may include checking for loose connections or damaged wiring related to the engine torque request signal, but complex issues may require professional diagnosis.

8. How much does it typically cost to fix the OBDII code P15F8 in a Chevrolet at a repair shop?

- The cost of repairing this code can vary depending on the specific issue, but it may involve diagnostic fees, parts replacement, and labor costs, potentially ranging from $100 to $500 or more.

9. Can a faulty sensor be a common culprit for triggering the OBDII code P15F8 in a Chevrolet?

- Yes, a faulty sensor related to the engine torque request signal or automatic braking system can be a common culprit for triggering this code and may need to be replaced.

10. Is it necessary to visit a dealership for repairs related to the OBDII code P15F8 in a Chevrolet?

- While visiting a dealership is an option, independent auto repair shops with experience in handling OBDII codes can also diagnose and repair the Automatic Braking Engine Torque Request Signal Message Counter Incorrect issue.