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P1574 2012 Nissan Altima Sedan Code - ASCD Vehicle Speed Sensor

Quick Answer

The P1574 diagnostic trouble code for a 2012 Nissan Altima Sedan specifically refers to the ASCD (Adaptive Speed Control Device) vehicle speed sensor. Common causes include Faulty ASCD vehicle speed sensor, Wiring or electrical connection issues, ECM software malfunction. 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
P1574 2012 Nissan Altima Sedan indicates ASCD Vehicle Speed Sensor.
Common causes
Common causes include Faulty ASCD vehicle speed sensor, Wiring or electrical connection issues, ECM software malfunction.
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 Aug 30, 2024
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Code P1574 2012 Nissan Altima Sedan Description

The P1574 diagnostic trouble code for a 2012 Nissan Altima Sedan specifically refers to the ASCD (Adaptive Speed Control Device) vehicle speed sensor. This sensor is responsible for monitoring the vehicle's speed and transmitting this information to the engine control module (ECM). When this code is triggered, it indicates that there is a malfunction or discrepancy in the ASCD vehicle speed sensor system. This can lead to issues with the vehicle's cruise control system, as it relies on accurate speed data to function properly. The ASCD system may not be able to maintain a constant speed or engage at all if this sensor is not functioning correctly.

OBDII Code P1574 2012 Nissan Altima Sedan - ASCD Vehicle Speed Sensor
P1574 2012 Nissan Altima Sedan Code - ASCD Vehicle Speed Sensor

Common Causes of P1574 2012 Nissan Altima Sedan

  1. Faulty ASCD vehicle speed sensor.
  2. Wiring or electrical connection issues.
  3. ECM software malfunction.
  4. Mechanical issues with the vehicle's transmission.
  5. Malfunctioning cruise control module.

Symptoms of P1574 2012 Nissan Altima Sedan

  1. Cruise control not engaging or maintaining speed.
  2. Inconsistent or inaccurate speed readings on the speedometer.
  3. Check Engine Light illuminated on the dashboard.
  4. Decreased fuel efficiency.
  5. Harsh shifting or transmission issues.

How to Fix P1574 2012 Nissan Altima Sedan

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and further investigate the ASCD vehicle speed sensor system.
  2. Inspect the wiring and connections related to the ASCD vehicle speed sensor for any damage or corrosion.
  3. Test the ASCD vehicle speed sensor for proper functionality and replace if necessary.
  4. Clear the trouble code from the ECM and reset the system to ensure the repair was successful.
  5. Test drive the vehicle to verify that the cruise control system is now functioning correctly.

Cost to Fix P1574 2012 Nissan Altima Sedan

The cost of repairing the ASCD vehicle speed sensor on a 2012 Nissan Altima Sedan can vary depending on the root cause of the issue. On average, parts for this repair may range from $50 to $150, while labor costs can range from $100 to $200. Overall, the total repair cost could fall between $150 to $350. It's important to factor in additional diagnostic time and labor rates when getting an accurate estimate from an auto repair shop, as these costs can vary based on location and other factors.

When is the Code Detected?

ECM detects a difference between two vehicle speed signals is out of the specified range.

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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 P1574 2012 Nissan Altima Sedan Code

1. What does OBDII code P1574 mean for my 2012 Nissan Altima Sedan?

The P1574 code on a 2012 Nissan Altima Sedan relates to the ASCD Vehicle Speed Sensor, which is part of the Automatic Speed Control Device system.

2. What are the common symptoms of a P1574 code in a 2012 Nissan Altima Sedan?

Common symptoms of the P1574 code may include issues with the cruise control system, such as the inability to set or maintain a constant speed.

3. What are the potential causes of OBDII code P1574 in a 2012 Nissan Altima Sedan?

The P1574 code in a 2012 Nissan Altima Sedan is typically triggered by a faulty ASCD Vehicle Speed Sensor or issues with the wiring or connectors associated with the sensor.

4. How can I diagnose the ASCD Vehicle Speed Sensor issue triggering code P1574 in my 2012 Nissan Altima Sedan?

Diagnosing the ASCD Vehicle Speed Sensor problem involves checking the sensor's wiring, connectors, and signal output using a multimeter and following the manufacturer's diagnostic procedures.

5. Can I continue to drive my 2012 Nissan Altima Sedan with the P1574 code present?

While it may be possible to drive with the P1574 code present, it is recommended to address the issue promptly to avoid potential safety concerns and further damage to the vehicle's systems.

6. How can I repair the ASCD Vehicle Speed Sensor issue causing code P1574 in my 2012 Nissan Altima Sedan?

Repairing the ASCD Vehicle Speed Sensor issue may involve replacing the faulty sensor, repairing damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

7. Are there any DIY tips for fixing the ASCD Vehicle Speed Sensor problem associated with code P1574 in a 2012 Nissan Altima Sedan?

DIY enthusiasts may attempt to replace the ASCD Vehicle Speed Sensor themselves, following proper safety precautions and referring to the vehicle's service manual for guidance.

8. Can a mechanic easily fix the ASCD Vehicle Speed Sensor issue triggering code P1574 in my 2012 Nissan Altima Sedan?

A qualified mechanic should be able to diagnose and repair the ASCD Vehicle Speed Sensor problem efficiently, ensuring proper functionality of the cruise control system.

9. Will resetting the OBDII code P1574 in my 2012 Nissan Altima Sedan resolve the issue permanently?

Resetting the P1574 code may clear the immediate warning, but if the underlying issue with the ASCD Vehicle Speed Sensor is not addressed, the code is likely to reappear.

10. Is it necessary to have the ASCD Vehicle Speed Sensor replaced if it triggers code P1574 in my 2012 Nissan Altima Sedan?

If diagnostics confirm that the ASCD Vehicle Speed Sensor is faulty and causing the P1574 code in a 2012 Nissan Altima Sedan, replacing the sensor is typically the recommended course of action to resolve the issue effectively.

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