AutoCodes – Cadillac – P11FF Cadillac

P11FF Cadillac 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 Cadillac 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 479
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 26, 2022
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Code P11FF Cadillac Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Fuel Pump Command Signal Message Counter is Incorrect.
OBDII Code P11FF Cadillac - Fuel Pump Command Signal Message Counter Incorrect - AutoCodes.com
P11FF Cadillac Code - Fuel Pump Command Signal Message Counter Incorrect

What are the Possible Causes of the DTC P11FF Cadillac?

  • Faulty Fuel Pump
  • Fuel Pump harness is open or shorted
  • Fuel Pump circuit poor electrical connection

How to Fix the DTC P11FF Cadillac?

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 Cadillac 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 Cadillac code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P11FF Cadillac Code

1. What are the common symptoms of OBDII code P11FF in a Cadillac related to the Fuel Pump Command Signal Message Counter Incorrect?

- Common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What are the possible causes of the OBDII code P11FF in a Cadillac?

- The code P11FF in a Cadillac can be triggered by issues such as a faulty fuel pump, damaged wiring or connectors in the fuel pump circuit, or a malfunctioning fuel pump control module.

3. How can I diagnose the OBDII code P11FF in my Cadillac?

- Diagnosing the code P11FF may involve conducting a thorough inspection of the fuel pump system, checking for any loose connections or damaged wiring, and using a scan tool to monitor the fuel pump command signal message counter.

4. Is it safe to continue driving my Cadillac with the OBDII code P11FF present?

- It is not recommended to drive your Cadillac with the code P11FF present, as it can lead to potential issues with the fuel pump operation and affect the overall performance of the vehicle.

5. Can I repair the OBDII code P11FF in my Cadillac myself?

- While some DIY enthusiasts may attempt to address the code P11FF by checking and repairing wiring connections, it is advisable to seek professional help to accurately diagnose and fix the underlying issue with the fuel pump system.

6. How much does it typically cost to repair the OBDII code P11FF in a Cadillac?

- The cost of repairing the code P11FF in a Cadillac can vary depending on the exact cause of the issue. It may range from a few hundred dollars for simple fixes like wiring repairs to over a thousand dollars if the fuel pump needs to be replaced.

7. Can a faulty fuel pump be the sole reason for triggering the OBDII code P11FF in a Cadillac?

- Yes, a faulty fuel pump is a common cause of the code P11FF in a Cadillac. If the fuel pump is not functioning properly, it can lead to incorrect signal messages being sent to the control module, triggering the code.

8. Are there any preventive measures to avoid the OBDII code P11FF in a Cadillac?

- Regular maintenance of the fuel pump system, including checking for leaks, keeping the fuel filter clean, and using high-quality fuel, can help prevent issues that may trigger the code P11FF.

9. How urgent is it to address the OBDII code P11FF in a Cadillac?

- It is important to address the code P11FF promptly to prevent further damage to the fuel pump system and ensure the vehicle operates safely and efficiently.

10. Can resetting the OBDII code P11FF in a Cadillac temporarily solve the issue?

- Resetting the code P11FF may temporarily turn off the check engine light, but if the underlying issue with the fuel pump system is not addressed, the code is likely to reappear.

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