AutoCodes – Isuzu – P1571 Isuzu

P1571 Isuzu Code - Brake Switch Circuit Malfunction

Quick Answer

P1571 Isuzu indicates Brake Switch Circuit Malfunction. Common causes include Misadjusted brake light switch, Faulty brake light switch, Brake light switch harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P1571 Isuzu indicates Brake Switch Circuit Malfunction.
Common causes: Common causes include Misadjusted brake light switch, Faulty brake light switch, Brake light switch harness is open or shorted.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,514

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1571 Isuzu Description

OBDII Code P1571 Isuzu - Brake Switch Circuit Malfunction - AutoCodes.com — P1571 Isuzu Code - Brake Switch Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1571 Isuzu?

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

How to Fix the DTC P1571 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 P1571 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 P1571 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 P1571 Isuzu Code

1. What are the common symptoms of OBDII code P1571 Isuzu (Brake Switch Circuit Malfunction)?

The common symptoms of code P1571 include the brake lights staying on continuously, difficulty shifting out of park, and the inability to engage cruise control.

2. What are the possible causes of OBDII code P1571 Isuzu?

The potential causes of code P1571 include a faulty brake switch, damaged wiring or connectors in the brake switch circuit, or a defective brake switch circuit relay.

3. How can I diagnose the OBDII code P1571 Isuzu?

Diagnosing code P1571 involves checking the brake switch operation, inspecting the wiring and connectors in the brake switch circuit, and testing the brake switch circuit relay for proper function.

4. Can a faulty brake switch cause code P1571?

Yes, a faulty brake switch is a common cause of code P1571. If the brake switch fails to operate correctly, it can trigger the malfunction code due to issues with the brake switch circuit.

5. How do I repair OBDII code P1571 Isuzu?

To repair code P1571, you may need to replace the brake switch if it is faulty, repair any damaged wiring or connectors in the brake switch circuit, or replace the brake switch circuit relay if necessary.

6. Is it safe to drive with OBDII code P1571 Isuzu active?

It is generally safe to drive with code P1571, but it is recommended to address the issue promptly to ensure proper brake light operation and avoid potential complications with shifting or cruise control.

7. Can I reset OBDII code P1571 Isuzu without fixing the underlying issue?

While you can clear the code with an OBDII scanner, it is important to address the root cause of code P1571 to prevent it from recurring and ensure the proper functioning of the brake switch circuit.

8. How much does it cost to repair OBDII code P1571 Isuzu at a mechanic?

The cost of repairing code P1571 can vary depending on the specific cause of the issue and the labor rates in your area. It may involve a simple brake switch replacement or more extensive wiring repairs.

9. Will OBDII code P1571 Isuzu cause my vehicle to fail an emissions test?

Code P1571 itself is not directly related to emissions, so it should not cause your vehicle to fail an emissions test. However, it is still important to address the issue for overall vehicle safety and performance.

10. How long does it typically take to repair OBDII code P1571 Isuzu?

The repair time for code P1571 can vary based on the complexity of the issue and the accessibility of components. In general, a skilled mechanic can diagnose and repair this code within a few hours to a day.