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P14D6 GMC Code - Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect

Quick Answer

The P14D6 diagnostic trouble code (DTC) indicates that the Fuel Pump Driver Control Module (FPDCM) has detected an issue with the configuration command signal, specifically related to the message counter for signal 5. Common causes include Faulty Fuel Pump Driver Control Module (FPDCM) that is unable to communicate correctly with the ECM, Damaged or corroded wiring or connectors in the fuel pump circuit, Software issues or glitches in the ECM that affect communication protocols. 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
P14D6 GMC indicates Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect.
Common causes
Common causes include Faulty Fuel Pump Driver Control Module (FPDCM) that is unable to communicate correctly with the ECM, Damaged or corroded wiring or connectors in the fuel pump circuit, Software issues or glitches in the ECM that affect communication protocols.
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 Oct 22, 2024
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Code P14D6 GMC Description

The P14D6 diagnostic trouble code (DTC) indicates that the Fuel Pump Driver Control Module (FPDCM) has detected an issue with the configuration command signal, specifically related to the message counter for signal 5. This code is primarily associated with the communication between the Engine Control Module (ECM) and the FPDCM, which is responsible for regulating the fuel pump's operation based on various engine parameters.

OBDII Code P14D6 GMC - Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect
P14D6 GMC Code - Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect

Common Causes of P14D6 GMC

  1. Faulty Fuel Pump Driver Control Module (FPDCM) that is unable to communicate correctly with the ECM.
  2. Damaged or corroded wiring or connectors in the fuel pump circuit.
  3. Software issues or glitches in the ECM that affect communication protocols.
  4. A malfunctioning fuel pump that may not be responding to the signals from the FPDCM.
  5. Electrical interference or issues with the vehicle's power supply affecting the FPDCM operation.

Symptoms of P14D6 GMC

  1. Engine stalling or hesitation during acceleration.
  2. Difficulty starting the vehicle, particularly after it has been running.
  3. Reduced fuel efficiency, leading to more frequent refueling.
  4. Illuminated check engine light on the dashboard.
  5. Unusual noises from the fuel pump or fuel system.

How to Fix P14D6 GMC

  1. Diagnostic Scan: Begin by using an OBD-II scanner to confirm the P14D6 code and check for any additional codes that may provide more context.
  2. Visual Inspection: Inspect the wiring and connectors associated with the FPDCM and fuel pump for signs of damage, corrosion, or loose connections.
  3. Module Testing: Test the FPDCM and ECM for proper functionality. This may involve checking for software updates or reprogramming if necessary.
  4. Replace Components: If any faulty components are identified (such as the FPDCM or fuel pump), replace them with new, OEM parts to ensure compatibility and reliability.
  5. Clear Codes and Test Drive: After repairs, clear the DTCs and perform a test drive to ensure that the issue has been resolved and that the vehicle operates normally.

Cost to Fix P14D6 GMC

The typical repair costs for addressing the P14D6 code can vary widely based on the specific diagnosis and repairs needed. On average, you might expect to pay between $200 and $800. This estimate includes parts, such as a new FPDCM or fuel pump, which can range from $100 to $400, and labor costs that typically range from $80 to $150 per hour. The total labor time may vary from 1 to 3 hours depending on the complexity of the issue. It's important to note that labor rates can differ significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. For a more precise estimate, checking local repair shop rates is advisable.

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Information for Specific GMC Models

  • P14D6 2014 GMC Sierra — Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect
  • P14D6 2015 GMC Sierra — Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect
  • P14D6 2016 GMC Sierra — Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect
  • P14D6 2017 GMC Sierra — Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter Incorrect
  • P14D6 2018 GMC Sierra — Fuel Pump Driver Control Module Configuration Command Signal 5 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 P14D6 GMC Code

1. What are the common symptoms of OBDII code P14D6 GMC?

- Common symptoms include poor engine performance, stalling, difficulty starting the vehicle, and illuminated Check Engine Light.

2. What does the OBDII code P14D6 GMC indicate?

- This code indicates that the Fuel Pump Driver Control Module Configuration Command Signal 5 Message Counter is incorrect.

3. What are the possible causes of OBDII code P14D6 GMC?

- Possible causes include a faulty fuel pump driver control module, wiring issues, a software malfunction, or a communication error within the vehicle's network.

4. How can I diagnose the cause of OBDII code P14D6 GMC?

- Diagnosing this code typically involves using a scan tool to retrieve the code and then performing further testing on the fuel pump driver control module, wiring connections, and related components.

5. Is it safe to continue driving with OBDII code P14D6 GMC?

- It is not recommended to continue driving with this code present, as it can lead to potential fuel pump or engine issues that may result in further damage.

6. Can I repair OBDII code P14D6 GMC myself?

- Depending on your automotive repair experience, you may be able to repair this code yourself by checking and repairing wiring connections, replacing the fuel pump driver control module, or reprogramming the module.

7. How much does it cost to fix OBDII code P14D6 GMC at a repair shop?

- The cost of fixing this code at a repair shop can vary depending on the specific diagnosis and repair needed, but it may range from $200 to $500 or more.

8. Will resetting the Check Engine Light make OBDII code P14D6 GMC go away?

- Simply resetting the Check Engine Light will not make this code go away, as the underlying issue causing the code needs to be diagnosed and repaired.

9. Can a bad fuel pump cause OBDII code P14D6 GMC?

- While a bad fuel pump can potentially contribute to this code, the primary culprit is usually the fuel pump driver control module or related components.

10. How urgent is it to address OBDII code P14D6 GMC?

- It is best to address this code promptly to prevent potential fuel delivery issues and engine performance problems that can arise from a malfunctioning fuel pump driver control module.

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