AutoCodes – GMC – P14D4 2015 GMC Sierra

P14D4 2015 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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: P14D4 2015 GMC Sierra indicates Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter Incorrect.
Common causes: Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver 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 153

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 P14D4 2015 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter is Incorrect.

OBDII Code P14D4 2015 GMC Sierra - Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter Incorrect - AutoCodes.com — P14D4 2015 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P14D4 2015 GMC Sierra?

Faulty Fuel Pump Driver Control Module
Fuel Pump Driver Control Module harness is open or shorted
Fuel Pump Driver Control Module circuit poor electrical connection

How to Fix the DTC P14D4 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 P14D4 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 P14D4 2015 GMC Sierra code?

Need more information on how to fix the P14D4 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 P14D4 2015 GMC Sierra Code

1. What does the OBDII code P14D4 mean on a 2015 GMC Sierra?

P14D4 indicates an issue with the Fuel Pump Driver Control Module (FPCM) related to Configuration Command Signal 2, where the message counter is incorrect.

2. What are the common symptoms of the P14D4 code on a GMC Sierra?

Common symptoms include engine performance issues, rough idling, difficulty starting, or the check engine light being illuminated.

3. What causes the P14D4 code to appear on a 2015 GMC Sierra?

The code is often triggered by software or communication issues within the Fuel Pump Driver Control Module, wiring problems, or a faulty FPCM itself.

4. Can a bad fuel pump cause the P14D4 code?

While a bad fuel pump could cause related symptoms, the P14D4 code specifically points to a communication issue in the Fuel Pump Driver Control Module, not necessarily the pump itself.

5. How do you diagnose the P14D4 code on a GMC Sierra?

Diagnosing involves scanning for related codes, inspecting the wiring and connectors to the FPCM, and testing the module for proper communication and functionality.

6. Can I drive my 2015 GMC Sierra with the P14D4 code?

Driving with this code is not recommended, as it may lead to further issues with fuel delivery or engine performance, potentially causing unsafe conditions.

7. How can the P14D4 code be fixed on a GMC Sierra?

Repairs may include reprogramming or updating the FPCM software, repairing damaged wiring or connectors, or replacing the Fuel Pump Driver Control Module if faulty.

8. Is the P14D4 code related to other fuel system codes?

The P14D4 code is specific to the communication issue with the FPCM but may accompany other fuel system or communication-related codes.

9. Does the P14D4 code require dealer assistance to fix?

Fixing this code often requires specialized equipment to diagnose and reprogram the Fuel Pump Driver Control Module, so dealer or professional assistance is recommended.

10. How much does it cost to repair the P14D4 code on a 2015 GMC Sierra?

Repair costs vary depending on whether the issue is with wiring, software, or the FPCM itself. Software updates are typically less expensive than module replacement, which can cost several hundred dollars.