AutoCodes – Mazda – P0571 Mazda

P0571 Mazda Code - Brake Switch Circuit Malfunction

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 Mazda indicates Brake Switch Circuit Malfunction.
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 24,849

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 Mazda 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 Mazda - Brake Switch Circuit Malfunction - AutoCodes.com — P0571 Mazda Code - Brake Switch Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0571 Mazda?

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 Mazda?

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 Mazda 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.

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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 P0571 Mazda Code

1. What are common symptoms of OBDII code P0571 in a Mazda related to the brake switch circuit malfunction?

The common symptoms include issues with the brake lights not working properly, difficulty shifting out of park, and the inability to engage cruise control.

2. What are the possible causes of OBDII code P0571 in a Mazda?

The potential causes of this code include a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or a malfunctioning body control module.

3. How can I diagnose the brake switch circuit malfunction causing OBDII code P0571 in my Mazda?

You can start by checking the brake light operation, inspecting the brake switch, testing the wiring and connectors for continuity and voltage, and scanning the vehicle for any other related trouble codes.

4. Can I still drive my Mazda with OBDII code P0571 related to the brake switch circuit malfunction?

It is not recommended to drive the vehicle with this issue as it can affect safety systems like brake lights and cruise control, potentially leading to hazardous situations on the road.

5. How can I repair OBDII code P0571 in my Mazda due to a brake switch circuit malfunction?

The repair process may involve replacing the faulty brake light switch, repairing or replacing damaged wiring or connectors, or reprogramming the body control module if necessary.

6. Will resetting the OBDII code P0571 in my Mazda fix the issue temporarily?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the brake switch circuit malfunction. Proper diagnosis and repair are necessary.

7. Are there any DIY tips for troubleshooting OBDII code P0571 in a Mazda?

You can start by checking the brake light switch adjustment, inspecting the fuse related to the brake lights, and visually inspecting the wiring and connectors for any visible damage.

8. How much does it typically cost to repair OBDII code P0571 related to the brake switch circuit malfunction in a Mazda?

The cost of repair can vary depending on the exact cause of the issue, but it may range from around $100 to $300 for parts and labor, excluding diagnostic fees.

9. Can a malfunctioning brake switch affect other systems in my Mazda besides triggering OBDII code P0571?

Yes, a malfunctioning brake switch can affect various systems like the brake lights, cruise control, transmission shifting, and even the engine management system in some cases.

10. Is it necessary to visit a dealership or a mechanic for diagnosing and repairing OBDII code P0571 in a Mazda?

While it is recommended to seek professional help for accurate diagnosis and repair, you can perform basic inspections and checks yourself if you have the necessary tools and knowledge.