P11FF Chevrolet 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 Chevrolet 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 Chevrolet Description
What are the Possible Causes of the DTC P11FF Chevrolet?
- Faulty Fuel Pump
- Fuel Pump harness is open or shorted
- Fuel Pump circuit poor electrical connection
How to Fix the DTC P11FF Chevrolet?
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 Chevrolet 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 Chevrolet code?
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Information for Specific Chevrolet Models
- P11FF 2014 Chevrolet Silverado — Fuel Pump Command Signal Message Counter Incorrect
- P11FF 2015 Chevrolet Silverado — Fuel Pump Command Signal Message Counter Incorrect
- P11FF 2016 Chevrolet Silverado — Fuel Pump Command Signal Message Counter Incorrect
- P11FF 2017 Chevrolet Silverado — Fuel Pump Command Signal Message Counter Incorrect
- P11FF 2018 Chevrolet Silverado — Fuel Pump Command Signal Message Counter Incorrect
Frequently Asked Questions about P11FF Chevrolet Code
1. What does the OBDII code P11FF mean on a Chevrolet?
P11FF indicates an issue with the fuel pump command signal message counter, where the signal from the fuel pump control module is not being received or processed correctly by the engine control module (ECM).
2. What are the common symptoms of code P11FF in a Chevrolet?
Symptoms may include difficulty starting the vehicle, reduced engine performance, stalling, or the illumination of the check engine light.
3. What causes code P11FF on a Chevrolet?
The most common causes are a malfunctioning fuel pump control module, wiring or connection issues between the control module and ECM, or a software issue in the ECM.
4. Can a bad fuel pump cause the P11FF code?
While the fuel pump itself is not typically the direct cause, issues with the fuel pump control module or related wiring can trigger this code.
5. How is code P11FF diagnosed on a Chevrolet?
A technician will use a scan tool to check the fuel pump command signal and inspect wiring, connectors, and the fuel pump control module for faults.
6. Can I drive my Chevrolet with code P11FF?
Driving with this code is not recommended, as it may lead to poor engine performance, stalling, or even a no-start condition.
7. How do you fix code P11FF on a Chevrolet?
Repairs may involve replacing the faulty fuel pump control module, repairing damaged wiring or connectors, or reprogramming the ECM if needed.
8. Is the P11FF code specific to Chevrolet vehicles?
While other manufacturers may use similar codes, P11FF is commonly associated with Chevrolet and GM vehicles.
9. What tools are needed to troubleshoot the P11FF code?
A professional OBDII scan tool, a multimeter for testing electrical circuits, and possibly the vehicle’s service manual are essential for diagnosing this code.
10. Will clearing the P11FF code fix the issue?
Clearing the code will temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
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