P11FF 2018 GMC Sierra Code - Fuel Pump Command Signal 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, Fuel Pump harness is open or shorted, Fuel Pump 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
- P11FF 2018 GMC Sierra indicates Fuel Pump Command Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Pump, Fuel Pump harness is open or shorted, Fuel Pump 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.
Code P11FF 2018 GMC Sierra Description
What are the Possible Causes of the DTC P11FF 2018 GMC Sierra?
- Faulty Fuel Pump
- Fuel Pump harness is open or shorted
- Fuel Pump circuit poor electrical connection
How to Fix the DTC P11FF 2018 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 P11FF 2018 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 P11FF 2018 GMC Sierra code?
Need more information on how to fix the P11FF 2018 GMC Sierra code? Get Access to Factory Service Manuals
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Frequently Asked Questions about P11FF 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code P11FF in a 2018 GMC Sierra?
The common symptoms of OBDII code P11FF include poor vehicle performance, reduced fuel efficiency, and potentially stalling or difficulty starting the engine.
2. What causes the OBDII code P11FF in a 2018 GMC Sierra?
The OBDII code P11FF in a 2018 GMC Sierra is typically triggered by issues related to the fuel pump command signal message counter being incorrect, which can result from wiring issues, a faulty fuel pump, or a malfunctioning fuel pump control module.
3. How can I diagnose the OBDII code P11FF in my 2018 GMC Sierra?
Diagnosing the OBDII code P11FF may require using a diagnostic scanner to retrieve the specific fault codes, conducting a visual inspection of the fuel pump wiring, checking the fuel pump's electrical connections, and testing the fuel pump control module.
4. Can I still drive my 2018 GMC Sierra with the OBDII code P11FF present?
It is not recommended to drive your 2018 GMC Sierra with the OBDII code P11FF present, as it can lead to potential engine performance issues and further damage to the fuel system components.
5. How do I repair the OBDII code P11FF in my 2018 GMC Sierra?
Repairing the OBDII code P11FF may involve repairing or replacing damaged wiring, replacing a faulty fuel pump, or replacing the fuel pump control module. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.
6. Is the OBDII code P11FF in my 2018 GMC Sierra a serious issue?
Yes, the OBDII code P11FF in a 2018 GMC Sierra should be addressed promptly to prevent potential engine performance issues and further damage to the fuel system components.
7. Can a DIY enthusiast fix the OBDII code P11FF in a 2018 GMC Sierra?
While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the OBDII code P11FF may require specialized tools and expertise, so it is advisable to seek professional help.
8. How long does it take to repair the OBDII code P11FF in a 2018 GMC Sierra?
The repair time for the OBDII code P11FF in a 2018 GMC Sierra can vary depending on the exact cause of the issue and the extent of the repairs needed. It is best to consult with a mechanic for a more accurate estimate.
9. Can a faulty fuel pump trigger the OBDII code P11FF in a 2018 GMC Sierra?
Yes, a faulty fuel pump is one of the common causes of the OBDII code P11FF in a 2018 GMC Sierra, as it can lead to issues with the fuel pump command signal message counter being incorrect.
10. How much does it cost to repair the OBDII code P11FF in a 2018 GMC Sierra?
The cost of repairing the OBDII code P11FF in a 2018 GMC Sierra can vary depending on the specific repairs needed, the cost of parts, and the labor rates of the mechanic. It is advisable to obtain a few quotes from different repair shops to compare prices.
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