P11FF 2017 Chevrolet Silverado Code - Fuel Pump Command Signal Message Counter Incorrect
Quick Answer
The P11FF diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Fuel Pump Command Signal Message Counter is incorrect. Common causes include Faulty wiring or connectors between the ECM and the fuel pump control module, Malfunctioning fuel pump control module, Defective ECM. 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 Chevrolet Silverado indicates Fuel Pump Command Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty wiring or connectors between the ECM and the fuel pump control module, Malfunctioning fuel pump control module, Defective ECM.
- 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 P11FF 2017 Chevrolet Silverado Description
The P11FF diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates that the Fuel Pump Command Signal Message Counter is incorrect. This code is typically associated with a communication error between the Engine Control Module (ECM) and the fuel pump control module. The ECM sends signals to the fuel pump control module to regulate the fuel pump's operation, ensuring the correct amount of fuel is delivered to the engine. When the message counter is incorrect, it means that the ECM is not receiving the expected number of responses from the fuel pump control module, indicating a potential issue with the communication system.
Common Causes of P11FF 2017 Chevrolet Silverado
- Faulty wiring or connectors between the ECM and the fuel pump control module
- Malfunctioning fuel pump control module
- Defective ECM
- Software glitch in the ECM's programming
- Electrical interference or poor ground connections
Symptoms of P11FF 2017 Chevrolet Silverado
- Engine misfires or hesitation during acceleration
- Rough idling or stalling
- Reduced fuel efficiency
- Difficulty starting the vehicle
- Illumination of the check engine light
How to Fix P11FF 2017 Chevrolet Silverado
- Begin by conducting a thorough inspection of the wiring and connectors between the ECM and the fuel pump control module. Look for any signs of damage, corrosion, or loose connections. Repair or replace any faulty components as needed.
- Use a diagnostic scan tool to check for any stored trouble codes in the ECM related to the fuel pump command signal. Clear the codes and monitor the system for any recurring issues.
- Test the fuel pump control module to ensure it is functioning properly. If necessary, replace the module with a new one.
- Check for any software updates or reprogramming available for the ECM. Update the software to the latest version to address any potential glitches.
- Once the repairs are complete, clear the DTC and perform a test drive to verify that the communication between the ECM and the fuel pump control module is functioning correctly.
Cost to Fix P11FF 2017 Chevrolet Silverado
The typical repair costs for addressing a P11FF code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as a new fuel pump control module or ECM can range from $200 to $800, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may fall within the range of $300 to $1100. It's important to note that these estimates are rough averages and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. Additionally, diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to ensure a competitive price.
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Frequently Asked Questions about P11FF 2017 Chevrolet Silverado Code
1. What does the OBDII code P11FF mean for a 2017 Chevrolet Silverado?
The P11FF code indicates an issue with the fuel pump command signal message counter, suggesting a communication problem between the fuel pump control module and the engine control module.
2. What are the common symptoms of the P11FF code?
Symptoms may include a check engine light, difficulty starting, reduced engine performance, or stalling.
3. What causes the P11FF code to appear?
Common causes include a faulty fuel pump control module, wiring or connector issues, or software communication errors between modules.
4. Can a bad fuel pump trigger the P11FF code?
No, this code typically relates to communication or signal issues, not the mechanical performance of the fuel pump itself.
5. How can I diagnose the P11FF code on my Silverado?
Begin by inspecting the wiring and connectors to the fuel pump control module, then use a scan tool to check for additional communication-related codes or software updates.
6. Is the P11FF code serious?
While the vehicle may still run, this code can lead to fuel delivery issues, reduced performance, or even stalling, so it should be addressed promptly.
7. How do I fix the P11FF code on a 2017 Chevrolet Silverado?
Repairs may involve repairing or replacing damaged wiring, updating the vehicle’s software, or replacing the fuel pump control module if faulty.
8. Can I drive with the P11FF code active?
Driving with this code may cause performance issues or stalling, so it’s best to have it inspected and repaired as soon as possible.
9. How much does it cost to fix the P11FF code?
Repair costs can vary but typically range from $100 to $500 depending on whether it’s a wiring repair, software update, or module replacement.
10. Can a software update resolve the P11FF code?
Yes, in some cases, a software update from the dealer may fix communication issues triggering the P11FF code.
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