AutoCodes – Isuzu – P0571 Isuzu

P0571 Isuzu Code - No Brake Switch Signal

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 Isuzu indicates No Brake Switch Signal.
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 11,895

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 Isuzu 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 Isuzu - No Brake Switch Signal - AutoCodes.com — P0571 Isuzu Code - No Brake Switch Signal

What does this mean?

What are the Possible Causes of the DTC P0571 Isuzu?

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 Isuzu?

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 Isuzu 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 Isuzu 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 Isuzu Code

1. What are the common symptoms of OBDII code P0571 in an Isuzu vehicle?

When the P0571 code is triggered in an Isuzu, common symptoms may include the brake lights not working properly, cruise control not functioning, and the inability to shift out of park.

2. What does the OBDII code P0571 Isuzu "No Brake Switch Signal" mean?

The P0571 code indicates that the Engine Control Module (ECM) has detected a lack of signal from the brake light switch, which is crucial for various vehicle functions.

3. What are the potential causes of OBDII code P0571 in an Isuzu?

Common causes of code P0571 in an Isuzu include a faulty brake light switch, a defective brake pedal position sensor, damaged wiring or connectors in the brake light circuit, or a malfunctioning ECM.

4. How can I diagnose the cause of OBDII code P0571 in my Isuzu?

To diagnose the P0571 code, you can start by checking the brake light switch for proper operation, inspecting the brake pedal position sensor, examining the wiring and connectors in the brake light circuit, and using a scan tool to gather more data.

5. Can I continue driving my Isuzu with OBDII code P0571 present?

It is not recommended to continue driving your Isuzu with the P0571 code active, as it can affect important safety features like brake lights and may lead to further issues if left unresolved.

6. How can I repair OBDII code P0571 in my Isuzu?

Repairing the P0571 code in an Isuzu typically involves replacing the faulty brake light switch, fixing any damaged wiring or connectors, or addressing issues with the brake pedal position sensor. A professional diagnosis may be necessary.

7. Will resetting the OBDII code P0571 clear the issue in my Isuzu?

Resetting the P0571 code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the code. It is crucial to diagnose and repair the issue to prevent it from recurring.

8. Can a DIY enthusiast fix OBDII code P0571 in an Isuzu?

Depending on their skill level, a DIY enthusiast may be able to address simpler causes of the P0571 code, such as replacing the brake light switch. However, more complex issues may require professional assistance.

9. How much does it cost to repair OBDII code P0571 in an Isuzu?

The cost of repairing the P0571 code in an Isuzu can vary depending on the specific cause of the issue, parts needed for replacement, labor costs, and whether you choose to do the repair yourself or seek assistance from a mechanic.

10. Are there any preventive measures to avoid OBDII code P0571 in my Isuzu?

Regularly inspecting and maintaining the brake light switch, checking the brake pedal position sensor, and ensuring the brake light circuit is in good condition can help prevent the occurrence of code P0571 in your Isuzu.