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P0571 Ford Code - Brake Switch 'A' Circuit

Quick Answer

The P0571 Ford diagnostic trouble code refers to a fault in the Brake Switch 'A' Circuit. Common causes include Malfunctioning brake switch, Wiring issue in the brake switch circuit, Faulty connection in the brake switch circuit. 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 Malfunctioning brake switch, Wiring issue in the brake switch circuit, Faulty connection in the brake switch circuit.
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 12, 2024
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Code P0571 Ford Description

The P0571 Ford diagnostic trouble code refers to a fault in the Brake Switch 'A' Circuit. The brake switch is a critical component in a vehicle's braking system that sends a signal to the vehicle's computer when the brake pedal is pressed. This signal is used by the vehicle's systems to engage the brake lights, disengage cruise control, and allow for proper transmission shifting. When the brake switch 'A' circuit malfunctions, it can have a significant impact on the vehicle's performance and safety.

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

Common Causes of P0571 Ford

  1. Malfunctioning brake switch
  2. Wiring issue in the brake switch circuit
  3. Faulty connection in the brake switch circuit
  4. Corrosion or damage to the brake switch components
  5. Electrical issues in the vehicle's system

Symptoms of P0571 Ford

  1. Brake lights not turning on when the brake pedal is pressed
  2. Cruise control not disengaging when the brakes are applied
  3. Vehicle not shifting out of park
  4. Check Engine Light being illuminated on the dashboard

How to Fix P0571 Ford

  1. Begin by locating the brake switch, typically located near the brake pedal under the dashboard.
  2. Disconnect the electrical connector from the brake switch and inspect it for any signs of damage or corrosion.
  3. Remove the old brake switch and install a new one, ensuring it is properly aligned and secured.
  4. Reconnect the electrical connector to the new brake switch.
  5. Test the brake lights, cruise control, and transmission shifting to ensure the issue has been resolved.

Cost to Fix P0571 Ford

The cost of repairing a P0571 Ford diagnostic trouble code can vary depending on the make and model of the vehicle, as well as the specific cause of the issue. On average, the cost of parts for a new brake switch can range from $20 to $50, while labor costs can range from $80 to $150 per hour. In total, the repair for a brake switch 'A' circuit issue may cost between $100 and $300. It is important to note that prices can vary based on location and the specific repair shop, so it is advisable to obtain quotes from multiple sources before proceeding with the repair.

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.

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Information for Specific Ford Models

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.

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