AutoCodes – Ford – P0571 2008 Ford Fusion

P0571 2008 Ford Fusion 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 2008 Ford Fusion 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 2,695

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0571 2008 Ford Fusion 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 2008 Ford Fusion - Brake Switch 'A' Circuit - AutoCodes.com — P0571 2008 Ford Fusion Code - Brake Switch 'A' Circuit

What does this mean?

What are the Possible Causes of the DTC P0571 2008 Ford Fusion?

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 2008 Ford Fusion?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0571 2008 Ford Fusion 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 2008 Ford Fusion code?

Need more information on how to fix the P0571 2008 Ford Fusion code? Get Access to Factory Service Manuals

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 P0571 2008 Ford Fusion Code

1. What does OBDII code P0571 on a 2008 Ford Fusion indicate?

The code P0571 on a 2008 Ford Fusion indicates an issue with the Brake Switch 'A' Circuit.

2. What are the common symptoms of OBDII code P0571 on a 2008 Ford Fusion?

Common symptoms of code P0571 may include the brake lights staying on all the time, inability to shift out of park, cruise control not working, and the check engine light illuminating.

3. What are some possible causes of OBDII code P0571 on a 2008 Ford Fusion?

Common causes of code P0571 include a faulty brake light switch, damaged wiring or connectors in the brake light circuit, or a problem with the brake pedal position sensor.

4. How can I diagnose the cause of OBDII code P0571 on my 2008 Ford Fusion?

To diagnose the cause of code P0571, you can start by checking the brake light switch for proper operation, inspecting the wiring and connectors for any damage, and testing the brake pedal position sensor for functionality.

5. Can I still drive my 2008 Ford Fusion with OBDII code P0571?

It is not recommended to drive your Ford Fusion with code P0571, as it can affect the normal operation of your vehicle's braking system and other safety features.

6. How do I repair OBDII code P0571 on a 2008 Ford Fusion?

To repair code P0571, you may need to replace the faulty brake light switch, repair any damaged wiring or connectors, or recalibrate the brake pedal position sensor as necessary.

7. Is it possible to reset OBDII code P0571 on a 2008 Ford Fusion without fixing the issue?

Resetting the code without fixing the underlying issue will only temporarily turn off the check engine light. The problem will likely reoccur until the root cause is resolved.

8. Can a DIY enthusiast fix OBDII code P0571 on a 2008 Ford Fusion?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix code P0571 by following repair guides and using the necessary equipment.

9. Will fixing OBDII code P0571 on a 2008 Ford Fusion be expensive?

The cost of fixing code P0571 will vary depending on the specific cause of the issue. In some cases, it may be a relatively inexpensive repair involving a simple replacement of the brake light switch or repairing wiring.

10. How urgent is it to address OBDII code P0571 on a 2008 Ford Fusion?

It is important to address code P0571 promptly to ensure the proper functioning of your vehicle's brake lights and related safety systems. Ignoring the issue could lead to potential safety hazards while driving.