AutoCodes – GMC – P15FB 2015 GMC Sierra

P15FB 2015 GMC Sierra Code - Brake Pedal Position Sensor Signal Message Counter Incorrect

Quick Answer

The Electronic Brake Control Module (EBCM) monitors the brake pedal position sensor in order to provide emission related brake pedal position information to the Engine Control Module (ECM). 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: P15FB 2015 GMC Sierra indicates Brake Pedal Position Sensor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 260

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 Aug 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P15FB 2015 GMC Sierra Description

The Electronic Brake Control Module (EBCM) monitors the brake pedal position sensor in order to provide emission related brake pedal position information to the Engine Control Module (ECM). The EBCM sends the information, via the serial data circuit, to the ECM in a continuously repeating series of 16 rolling counts, with each count assigned a value. When the ECM determines that too many of the counts have an incorrect value, the ECM sets DTC P15FB.

OBDII Code P15FB 2015 GMC Sierra - Brake Pedal Position Sensor Signal Message Counter Incorrect - AutoCodes.com — P15FB 2015 GMC Sierra Code - Brake Pedal Position Sensor Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15FB 2015 GMC Sierra?

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 P15FB 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 P15FB 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 P15FB 2015 GMC Sierra code?

Need more information on how to fix the P15FB 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P15FB 2015 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 P15FB 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P15FB in a 2015 GMC Sierra?

- Common symptoms include the check engine light turning on, issues with the brake system, and potential problems with the brake pedal functionality.

2. What does the OBDII code P15FB indicate in a 2015 GMC Sierra?

- The code P15FB indicates that the Brake Pedal Position Sensor Signal Message Counter Incorrect in the vehicle's system.

3. What could cause the OBDII code P15FB to trigger in a 2015 GMC Sierra?

- Possible causes of code P15FB include a faulty brake pedal position sensor, wiring issues, or problems with the brake control module.

4. How serious is the OBDII code P15FB in a 2015 GMC Sierra?

- Code P15FB should be addressed promptly as it can affect the proper functioning of the brake system, potentially compromising vehicle safety.

5. Can I continue to drive my 2015 GMC Sierra with OBDII code P15FB?

- It is not recommended to continue driving the vehicle with code P15FB present, as it can lead to brake-related issues and safety concerns.

6. What are some DIY repair tips for addressing OBDII code P15FB in a 2015 GMC Sierra?

- DIY repair tips may include checking the brake pedal position sensor for any visible damage, inspecting the wiring for any breaks or shorts, and ensuring proper connections.

7. How can a mechanic diagnose and repair OBDII code P15FB in a 2015 GMC Sierra?

- A mechanic may use a scan tool to diagnose the specific issue triggering the code, conduct further testing on the brake pedal position sensor, and repair or replace any faulty components.

8. Is it necessary to reset the OBDII code P15FB after repairing the issue in a 2015 GMC Sierra?

- Yes, it is recommended to reset the code after repairing the underlying problem to clear the check engine light and ensure proper monitoring of the system.

9. Are there any recalls or technical service bulletins related to OBDII code P15FB in a 2015 GMC Sierra?

- It is advisable to check with GMC or a certified dealership for any recalls or technical service bulletins related to code P15FB to see if there are known issues or remedies available.

10. How can I prevent OBDII code P15FB from recurring in my 2015 GMC Sierra?

- Regular maintenance, such as checking the brake system components and addressing any issues promptly, can help prevent code P15FB from recurring.