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P14D5 2018 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter Incorrect

Quick Answer

The P14D5 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter being incorrect. Common causes include Faulty fuel pump driver control module, Wiring or connection issues between modules, Software or programming errors. 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
P14D5 2018 GMC Sierra indicates Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter Incorrect.
Common causes
Common causes include Faulty fuel pump driver control module, Wiring or connection issues between modules, Software or programming errors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P14D5 2018 GMC Sierra Description

The P14D5 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter being incorrect. This code indicates that there is a problem with the communication between the fuel pump driver control module and other modules in the vehicle. The fuel pump driver control module is responsible for controlling the fuel pump operation, ensuring the correct fuel pressure is maintained for the engine to run smoothly.

OBDII Code P14D5 2018 GMC Sierra - Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter Incorrect
P14D5 2018 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 3 Message Counter Incorrect

Common Causes of P14D5 2018 GMC Sierra

  1. Faulty fuel pump driver control module.
  2. Wiring or connection issues between modules.
  3. Software or programming errors.
  4. Electrical system malfunctions.
  5. Environmental factors such as moisture or corrosion affecting connections.

Symptoms of P14D5 2018 GMC Sierra

  1. Engine misfires or hesitation during acceleration.
  2. Reduced fuel efficiency.
  3. Engine stalling or difficulty starting.
  4. Illumination of the check engine light.
  5. Rough idling or uneven engine performance.

How to Fix P14D5 2018 GMC Sierra

  1. Begin by conducting a thorough diagnostic scan to confirm the P14D5 code and identify any other related codes.
  2. Inspect the wiring and connections between the fuel pump driver control module and other modules for any signs of damage or corrosion.
  3. Test the fuel pump driver control module for proper functionality and replace if necessary.
  4. Update the software or reprogram the modules to ensure proper communication.
  5. Clear the DTCs, reset the system, and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P14D5 2018 GMC Sierra

The typical repair costs for addressing a P14D5 code on a 2018 GMC Sierra can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Most auto repair shops commonly charge between $80 and $150 per hour for labor.

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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 P14D5 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P14D5 in a 2018 GMC Sierra?

The common symptoms of code P14D5 typically include issues with the fuel pump operation, such as intermittent or complete fuel pump failure, engine stalling, or difficulty starting the vehicle.

2. What could cause the OBDII code P14D5 to appear in a 2018 GMC Sierra?

The most common cause of code P14D5 in a 2018 GMC Sierra is a fault in the Fuel Pump Driver Control Module (FDCM) configuration, such as incorrect signal messages being sent or received.

3. How serious is the OBDII code P14D5 in a 2018 GMC Sierra?

Code P14D5 can be a serious issue as it directly affects the fuel pump operation, which is essential for the proper functioning of the vehicle. It is recommended to address this code promptly to avoid potential engine performance issues.

4. Can I continue driving my 2018 GMC Sierra with the OBDII code P14D5 present?

It is not advisable to continue driving your GMC Sierra with code P14D5 present, as it can lead to fuel delivery problems and potential engine stalling. It is recommended to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose and repair the OBDII code P14D5 in my 2018 GMC Sierra?

Diagnosing and repairing code P14D5 typically involves inspecting the Fuel Pump Driver Control Module for configuration errors, checking the wiring and connectors for any faults, and ensuring proper communication between the module and the vehicle's ECM.

6. Is it possible to reset the OBDII code P14D5 in a 2018 GMC Sierra without fixing the underlying issue?

While you can reset the code temporarily, it will likely reappear if the underlying issue with the Fuel Pump Driver Control Module configuration is not addressed. It is recommended to diagnose and repair the root cause of the problem.

7. Can a DIY enthusiast fix the OBDII code P14D5 in a 2018 GMC Sierra?

Repairing OBDII code P14D5 often requires advanced diagnostic tools and knowledge of automotive electronics. It is recommended to seek assistance from a qualified mechanic or technician to properly diagnose and repair this issue.

8. How much does it cost to repair the OBDII code P14D5 in a 2018 GMC Sierra?

The cost of repairing code P14D5 can vary depending on the exact cause of the issue and the labor rates in your area. It is best to get a diagnostic from a professional to receive an accurate estimate for the repair.

9. Are there any preventative maintenance tips to avoid OBDII code P14D5 in a 2018 GMC Sierra?

To prevent code P14D5 from appearing, it's essential to follow the manufacturer's recommended maintenance schedule for your GMC Sierra. Regularly inspecting and maintaining the fuel system components can also help prevent issues that may trigger this code.

10. Will fixing the OBDII code P14D5 improve the performance and fuel efficiency of my 2018 GMC Sierra?

Addressing and resolving code P14D5 can potentially improve the performance and fuel efficiency of your GMC Sierra, as it ensures proper fuel pump operation and fuel delivery to the engine.

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