P14D4 2015 GMC Sierra Code - Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter Incorrect
Quick Answer
The P14D4 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter being incorrect. Common causes include Faulty wiring connections, Malfunctioning fuel pump driver control module, Issues with the engine control module. 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 wiring connections, Malfunctioning fuel pump driver control module, Issues with the engine control module.
- 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 P14D4 2015 GMC Sierra Description
The P14D4 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Fuel Pump Driver Control Module Configuration Command Signal 2 Message Counter being incorrect. This code indicates that there is an issue with the communication between the fuel pump driver control module and the vehicle's onboard computer system. The fuel pump driver control module is responsible for regulating the fuel pump's operation, ensuring the correct fuel pressure is maintained for optimal engine performance.
Common Causes of P14D4 2015 GMC Sierra
- Faulty wiring connections
- Malfunctioning fuel pump driver control module
- Issues with the engine control module
- Software glitches in the vehicle's computer system
Symptoms of P14D4 2015 GMC Sierra
- Poor fuel efficiency
- Rough idling
- Hesitation during acceleration
- Engine stalling
- Check Engine Light illuminated
How to Fix P14D4 2015 GMC Sierra
- Perform a thorough inspection of the wiring connections related to the fuel pump driver control module.
- Test the fuel pump driver control module for proper functionality and replace if necessary.
- Check the engine control module for any faults and reprogram if needed.
- Update the vehicle's software to address any glitches in the communication system.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P14D4 2015 GMC Sierra
The typical repair costs for addressing the P14D4 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new fuel pump driver control module or wiring components can range from $200 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to $300 to $800 or more. It is advisable to consult with a professional mechanic to obtain an accurate estimate based on the specific diagnosis and repair requirements for your vehicle.
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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.
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