P11FF 2014 GMC Sierra Code - Fuel Pump Command Signal Message Counter Incorrect
Quick Answer
The P11FF diagnostic trouble code for a 2014 GMC Sierra indicates that the Fuel Pump Command Signal Message Counter is incorrect. Common causes include Faulty fuel pump relay, Wiring issues or loose connections in the fuel pump circuit, Defective fuel pump 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
- P11FF 2014 GMC Sierra indicates Fuel Pump Command Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty fuel pump relay, Wiring issues or loose connections in the fuel pump circuit, Defective fuel pump 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P11FF 2014 GMC Sierra Description
The P11FF diagnostic trouble code for a 2014 GMC Sierra indicates that the Fuel Pump Command Signal Message Counter is incorrect. This code typically means that the Engine Control Module (ECM) has detected a problem with the signal messages being sent to the fuel pump, which could lead to issues with fuel delivery and affect the vehicle's performance. The fuel pump is a crucial component responsible for supplying fuel to the engine, and any disruptions in its operation can lead to a variety of problems.
Common Causes of P11FF 2014 GMC Sierra
- Faulty fuel pump relay
- Wiring issues or loose connections in the fuel pump circuit
- Defective fuel pump control module
- Malfunctioning ECM
- Fuel pump failure
Symptoms of P11FF 2014 GMC Sierra
- Engine misfires or hesitation during acceleration
- Decreased fuel efficiency
- Difficulty starting the vehicle
- Engine stalling or shutting off unexpectedly
- Illumination of the check engine light
How to Fix P11FF 2014 GMC Sierra
- Begin by conducting a thorough inspection of the fuel pump relay, wiring, and connections to ensure they are all in good condition.
- Test the fuel pump control module and ECM to determine if they are functioning properly.
- If the fuel pump relay is faulty, replace it with a new one.
- If the wiring or connections are damaged, repair or replace them as needed.
- If the fuel pump itself is the issue, replace it with a new unit.
Cost to Fix P11FF 2014 GMC Sierra
The cost of repairing a P11FF code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the parts needed for this repair can range from $100 to $300, while labor costs can range from $100 to $200. This estimate does not include the cost of diagnostic testing, which can add to the overall repair bill. It's important to consult with a trusted mechanic or auto repair shop to get an accurate cost estimate based on your vehicle's specific needs.
Need more information about the P11FF 2014 GMC Sierra code?
Need more information on how to fix the P11FF 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P11FF 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P11FF 2014 GMC Sierra Code
1. What does the OBDII code P11FF mean on a 2014 GMC Sierra?
P11FF indicates that the Fuel Pump Command Signal Message Counter is incorrect, meaning there’s a communication issue between the fuel pump control module and the engine control module (ECM).
2. What are the common symptoms of code P11FF in a 2014 GMC Sierra?
Symptoms may include difficulty starting the engine, reduced engine performance, stalling, or the illumination of the check engine light.
3. What causes the P11FF code to appear on a 2014 GMC Sierra?
Common causes include a faulty fuel pump control module, wiring or connector issues, or a malfunctioning ECM.
4. Can a loose connection trigger the P11FF code?
Yes, loose or corroded wiring connections between the fuel pump control module and ECM can cause this code.
5. How do you diagnose the P11FF code on a 2014 GMC Sierra?
Diagnosis involves scanning for codes, inspecting the wiring and connectors, testing the fuel pump control module, and verifying communication with the ECM.
6. Can I drive my 2014 GMC Sierra with the P11FF code?
Driving with this code is not recommended, as it could lead to engine stalling or further damage to the fuel system.
7. How much does it cost to fix the P11FF code on a 2014 GMC Sierra?
Repair costs vary depending on the issue, but replacing the fuel pump control module typically costs $300-$600, including labor.
8. Is the P11FF code specific to GMC vehicles?
While the P11FF code is commonly associated with GMC vehicles, similar communication issues can occur in other brands with slightly different codes.
9. Can resetting the code fix the P11FF issue?
Resetting the code may clear the check engine light temporarily, but it won’t resolve the underlying issue causing the code.
10. What tools are needed to fix the P11FF code on a 2014 GMC Sierra?
You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly specialized tools to replace the fuel pump control module.
Discuss the causes and fixes for P11FF 2014 GMC Sierra OBDII Code
Code P11FF 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.