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P0571 2011 Ford Fusion Code - Brake Switch 'A' Circuit

Quick Answer

The P0571 diagnostic trouble code (DTC) for a 2011 Ford Fusion relates to the brake switch 'A' circuit. Common causes include Faulty brake light switch, Damaged wiring or connectors in the circuit, Issues with the brake pedal position sensor. 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
P0571 2011 Ford Fusion indicates Brake Switch 'A' Circuit.
Common causes
Common causes include Faulty brake light switch, Damaged wiring or connectors in the circuit, Issues with the brake pedal position sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0571 2011 Ford Fusion Description

The P0571 diagnostic trouble code (DTC) for a 2011 Ford Fusion relates to the brake switch 'A' circuit. This code indicates a malfunction in the electrical circuit associated with the brake light switch. The brake light switch is a critical component of the vehicle's safety system as it is responsible for activating the brake lights when the brake pedal is pressed. When this circuit malfunctions, it can lead to issues with brake light operation, affecting the visibility of the vehicle to other road users.

OBDII Code P0571 2011 Ford Fusion - Brake Switch 'A' Circuit
P0571 2011 Ford Fusion Code - Brake Switch 'A' Circuit

Common Causes of P0571 2011 Ford Fusion

  1. Faulty brake light switch
  2. Damaged wiring or connectors in the circuit
  3. Issues with the brake pedal position sensor
  4. Corrosion or moisture in the electrical connections
  5. Faulty transmission control module

Symptoms of P0571 2011 Ford Fusion

  1. Illumination of the check engine light on the dashboard
  2. Inoperative or intermittent brake lights
  3. Difficulty disengaging the cruise control system
  4. Transmission shifting issues
  5. Vehicle may not start due to safety interlock system

How to Fix P0571 2011 Ford Fusion

  1. Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific fault code and pinpoint the exact cause of the problem.
  2. Inspect the brake light switch for proper operation and replace if necessary.
  3. Check the wiring and connectors in the brake switch circuit for damage or corrosion, repairing or replacing as needed.
  4. Test the brake pedal position sensor to ensure it is functioning correctly and replace if faulty.
  5. Clear the fault code from the vehicle's memory using the diagnostic scanner and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0571 2011 Ford Fusion

The typical repair costs for addressing a P0571 code in a 2011 Ford Fusion can range from $100 to $300, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repair.

What does this mean?

Tech Notes for P0571 2011 Ford Fusion

Check the bulb and fuse first, if they are good replace the stop lamp switch (it is located behind the brake pedal)

When is the Code Detected?

The P0571 codes is set when the stop light switch does not turn off even once the vehicle is driven.

Need more information about the P0571 2011 Ford Fusion 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 P0571 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P0571 in a 2011 Ford Fusion?

The common symptoms of code P0571 in a 2011 Ford Fusion include issues with the brake lights staying on, difficulty shifting out of park, and the cruise control not functioning properly.

2. What does the OBDII code P0571 indicate in a 2011 Ford Fusion?

OBDII code P0571 in a 2011 Ford Fusion indicates a problem with the Brake Switch 'A' Circuit, which is responsible for detecting when the brake pedal is depressed.

3. What are the possible causes of OBDII code P0571 in a 2011 Ford Fusion?

Possible causes of code P0571 in a 2011 Ford Fusion include a faulty brake light switch, a misadjusted brake light switch, damaged wiring or connectors related to the brake switch, or a problem with the brake pedal position sensor.

4. How can I diagnose OBDII code P0571 in my 2011 Ford Fusion?

To diagnose code P0571 in a 2011 Ford Fusion, you can start by checking the brake lights to see if they are working properly, inspecting the brake switch for any visible damage, and using an OBDII scanner to read the trouble codes and further diagnose the issue.

5. Can I still drive my 2011 Ford Fusion with OBDII code P0571?

It is not recommended to drive your 2011 Ford Fusion with OBDII code P0571, as it can affect the proper functioning of the brake lights and other safety features like the cruise control. It is best to address the issue promptly.

6. How can I repair OBDII code P0571 in my 2011 Ford Fusion?

To repair code P0571 in a 2011 Ford Fusion, you may need to replace the brake light switch, adjust the brake light switch properly, repair any damaged wiring or connectors, or address any issues with the brake pedal position sensor.

7. Will resetting the OBDII code P0571 in my 2011 Ford Fusion make it go away permanently?

Resetting the OBDII code P0571 in a 2011 Ford Fusion may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and repair the root cause of the problem.

8. Can a DIY enthusiast fix OBDII code P0571 in a 2011 Ford Fusion?

Depending on their skill level and experience, a DIY enthusiast may be able to fix code P0571 in a 2011 Ford Fusion by following repair guides, watching tutorials, and using the necessary tools. However, if unsure, it's best to seek professional help.

9. Is OBDII code P0571 a common issue in 2011 Ford Fusion vehicles?

Code P0571 related to the Brake Switch 'A' Circuit is a common issue in 2011 Ford Fusion vehicles and can occur due to various reasons such as wear and tear on the brake light switch or wiring issues.

10. How much does it typically cost to repair OBDII code P0571 in a 2011 Ford Fusion?

The cost to repair OBDII code P0571 in a 2011 Ford Fusion can vary depending on the root cause of the issue, the extent of the repairs needed, and whether you choose to do it yourself or seek professional help. Costs can range from a few dollars for a DIY fix to a couple of hundred dollars for parts and labor at a repair shop.

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