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C1572 Lexus Code - Vehicle Speed Signal Malfunction

Quick Answer

The C1572 diagnostic trouble code (DTC) for Lexus vehicles indicates a Vehicle Speed Signal Malfunction. Common causes include Faulty vehicle speed sensor (VSS), Damaged wiring or connectors in the speed sensor circuit, Corrosion or debris affecting the speed sensor. 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
C1572 Lexus indicates Vehicle Speed Signal Malfunction.
Common causes
Common causes include Faulty vehicle speed sensor (VSS), Damaged wiring or connectors in the speed sensor circuit, Corrosion or debris affecting the speed sensor.
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 15, 2024
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Code C1572 Lexus Description

The C1572 diagnostic trouble code (DTC) for Lexus vehicles indicates a Vehicle Speed Signal Malfunction. This code is triggered when the vehicle's onboard computer system detects an issue with the signal that communicates the vehicle's speed to the engine control module. The vehicle speed signal is crucial for various systems in the vehicle, including the transmission, ABS, traction control, and cruise control. When this signal malfunctions, it can lead to a range of performance issues and safety concerns.

OBDII Code C1572 Lexus - Vehicle Speed Signal Malfunction
C1572 Lexus Code - Vehicle Speed Signal Malfunction

Common Causes of C1572 Lexus

  1. Faulty vehicle speed sensor (VSS)
  2. Damaged wiring or connectors in the speed sensor circuit
  3. Corrosion or debris affecting the speed sensor
  4. Issues with the engine control module (ECM) receiving the speed signal
  5. Electronic control unit (ECU) software malfunction

Symptoms of C1572 Lexus

  1. Inaccurate speedometer readings
  2. Erratic shifting of the transmission
  3. Loss of traction control or ABS functionality
  4. Cruise control not engaging or disengaging unexpectedly
  5. Check Engine Light illuminated on the dashboard

How to Fix C1572 Lexus

  1. Diagnose the issue by using a scan tool to retrieve the specific trouble code and checking the vehicle speed sensor for proper operation.
  2. Inspect the wiring and connectors in the speed sensor circuit for any damage or corrosion. Repair or replace as needed.
  3. Clean the speed sensor and its mounting area to ensure proper contact and signal transmission.
  4. Test the vehicle speed sensor using a multimeter to verify accurate readings.
  5. If the speed sensor is faulty, replace it with a new one and reset the trouble code.

Cost to Fix C1572 Lexus

The typical repair costs for a Vehicle Speed Signal Malfunction can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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 C1572 Lexus Code

1. What are the common symptoms of OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- Common symptoms include erratic speedometer readings, ABS warning light illuminated, and issues with cruise control functionality.

2. What can cause the OBDII code C1572 (Lexus) to trigger the Vehicle Speed Signal Malfunction?

- The code can be triggered by a faulty vehicle speed sensor, damaged wiring or connectors related to the speed sensor, or a malfunction in the ABS control module.

3. How can I diagnose the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- Diagnosing this code typically involves checking the vehicle speed sensor for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to retrieve specific diagnostic information.

4. Can a Vehicle Speed Signal Malfunction affect the vehicle's performance or safety?

- Yes, a malfunction in the vehicle speed signal can affect various systems like the speedometer, ABS, and cruise control, potentially impacting the vehicle's performance and safety.

5. What are some DIY repair tips for fixing the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- DIY repair tips may include checking and cleaning the speed sensor and its connections, repairing damaged wiring, or replacing the faulty speed sensor if necessary.

6. How much does it typically cost to repair the Vehicle Speed Signal Malfunction related to OBDII code C1572 (Lexus)?

- The repair costs can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can I continue driving my vehicle with the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- It is not recommended to ignore this issue, as it can lead to further complications with speed-related systems in the vehicle. It is advisable to address the problem promptly.

8. Will resetting the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction resolve the issue?

- Resetting the code may temporarily clear the warning light, but if the underlying problem persists, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the malfunction.

9. How long does it take to repair the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- The repair time can vary based on the specific cause of the issue and the complexity of the repair. It may take anywhere from 1 to 3 hours to diagnose and fix the problem.

10. Can a professional mechanic help with diagnosing and repairing the OBDII code C1572 (Lexus) - Vehicle Speed Signal Malfunction?

- Yes, seeking assistance from a professional mechanic or automotive technician is recommended for accurate diagnosis and proper repair of the Vehicle Speed Signal Malfunction related to OBDII code C1572 in a Lexus vehicle.

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