AutoCodes – Ford – P0571 Ford

P0571 Ford Code - Brake Switch 'A' Circuit

Quick Answer

When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted. 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 Ford indicates Brake Switch 'A' Circuit.
Common causes: Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted.
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 Popularity 14,001

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0571 Ford Description

When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). When the ECM receives this signal, it cancels the cruise control.

OBDII Code P0571 Ford - Brake Switch 'A' Circuit - AutoCodes.com — P0571 Ford Code - Brake Switch 'A' Circuit

What does this mean?

What are the Possible Causes of the DTC P0571 Ford?

Faulty Brake Switch
Misadjusted brake switch
Brake Switch harness is open or shorted
Brake Switch circuit poor electrical connection

How to Fix the DTC P0571 Ford?

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 P0571 Ford 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 P0571 Ford code?

Need more information on how to fix the P0571 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0571 Ford code diagnosed by a professional: Find a repair shop in your area

Information for Specific Ford Models

P0571 2006 Ford Fusion — Brake Switch 'A' Circuit
P0571 2007 Ford Fusion — Brake Switch 'A' Circuit
P0571 2008 Ford Fusion — Brake Switch 'A' Circuit
P0571 2009 Ford Fusion — Brake Switch 'A' Circuit
P0571 2010 Ford Fusion — Brake Switch 'A' Circuit
P0571 2011 Ford Fusion — Brake Switch 'A' Circuit
P0571 2012 Ford Fusion — Brake Switch 'A' Circuit

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 Ford Code

1. What are the common symptoms of OBDII code P0571 in a Ford related to the Brake Switch 'A' Circuit?

- Common symptoms include the brake lights staying on constantly, difficulty shifting out of park, cruise control not working, and the inability to engage the vehicle's traction control system.

2. What are the possible causes of OBDII code P0571 for the Brake Switch 'A' Circuit in a Ford?

- Potential causes may include a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, a malfunctioning brake control module, or a problem with the vehicle's PCM.

3. How can I diagnose a P0571 trouble code in my Ford related to the Brake Switch 'A' Circuit?

- You can diagnose the issue by checking the brake light switch for proper operation, inspecting the wiring and connectors for any damage, and using an OBDII scanner to read and clear the trouble code.

4. Can I still drive my Ford with an active P0571 code for the Brake Switch 'A' Circuit?

- It is generally not recommended to drive the vehicle with an active P0571 code, as it can affect the proper functioning of critical systems like the brake lights and traction control.

5. What is the typical repair process for resolving OBDII code P0571 in a Ford related to the Brake Switch 'A' Circuit?

- The typical repair process involves replacing the faulty brake light switch, repairing any damaged wiring or connectors, resetting the trouble code with an OBDII scanner, and conducting a test drive to ensure the issue is resolved.

6. Can a DIY enthusiast fix the P0571 code on a Ford for the Brake Switch 'A' Circuit?

- Depending on your level of automotive repair expertise, it is possible to fix the issue yourself by following a repair manual or online guides. However, if you are unsure, it is best to consult a professional mechanic.

7. Are there any maintenance tips to prevent OBDII code P0571 from occurring in a Ford regarding the Brake Switch 'A' Circuit?

- Regularly inspecting the brake light switch for any signs of wear or damage, ensuring proper installation and adjustment, and addressing any brake-related issues promptly can help prevent the occurrence of the P0571 trouble code.

8. How does the Brake Switch 'A' Circuit impact the overall safety and performance of a Ford vehicle?

- The Brake Switch 'A' Circuit is crucial for the proper operation of the brake lights, transmission shifting, cruise control, and traction control systems. A malfunction can impact the overall safety and performance of the vehicle.