P11FF 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P11FF 2017 GMC Sierra?
- Faulty Fuel Pump
- Fuel Pump harness is open or shorted
- Fuel Pump circuit poor electrical connection
How to Fix the DTC P11FF 2017 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 2017 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 2017 GMC Sierra code?
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Frequently Asked Questions about P11FF 2017 GMC Sierra Code
What does the OBDII code P11FF mean for a 2017 GMC Sierra?
The P11FF code indicates an issue with the fuel pump command signal message counter, suggesting communication errors between the fuel pump control module and the engine control module (ECM).
What are the common symptoms of the P11FF code in a 2017 GMC Sierra?
Symptoms may include difficulty starting the engine, reduced engine performance, poor fuel efficiency, or the illumination of the check engine light.
What causes the P11FF code to appear in a 2017 GMC Sierra?
Common causes include faulty wiring or connectors in the fuel pump control circuit, a malfunctioning fuel pump control module, or software issues in the ECM.
Can a faulty fuel pump trigger the P11FF code?
No, the P11FF code is more related to communication issues between the modules rather than a physical failure of the fuel pump itself.
How is the P11FF code diagnosed?
A technician will use a scan tool to review freeze frame data, inspect wiring and connectors for damage, and test the fuel pump control module for proper communication with the ECM.
Can I drive my 2017 GMC Sierra with the P11FF code?
Driving with the P11FF code is not recommended, as it may lead to further performance issues or potential damage to the fuel delivery system.
How is the P11FF code typically repaired?
Repairs may involve fixing damaged wiring, replacing the fuel pump control module, or updating the software in the ECM to resolve communication errors.
Is the P11FF code covered under warranty for a 2017 GMC Sierra?
It depends on your vehicle’s warranty coverage and mileage; consult your GMC dealer for details on powertrain or emissions warranty eligibility.
Can a dead battery cause the P11FF code to appear?
A dead or weak battery can sometimes cause communication errors between modules, potentially leading to the P11FF code. Ensure the battery and charging system are in good condition.
Will clearing the P11FF code fix the issue?
Clearing the code might temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.
Discuss the causes and fixes for P11FF 2017 GMC Sierra OBDII Code
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