Engine-Codes.com
Engine-Codes – Infiniti – P1574 Infiniti

P1574 Infiniti Code - ASCD Vehicle Speed Sensor

Quick Answer

The P1574 code in an Infiniti vehicle specifically refers to an issue with the ASCD (Automatic Speed Control Device) Vehicle Speed Sensor. Common causes include Faulty ASCD Vehicle Speed Sensor, Wiring or connection issues, ECM communication problems. 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 Infiniti indicates ASCD Vehicle Speed Sensor.
Common causes
Common causes include Faulty ASCD Vehicle Speed Sensor, Wiring or connection issues, ECM communication problems.
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 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1574 Infiniti Description

The P1574 code in an Infiniti vehicle specifically refers to an issue with the ASCD (Automatic Speed Control Device) Vehicle Speed Sensor. This sensor is responsible for monitoring the vehicle's speed and transmitting that information to the engine control module (ECM) to assist in maintaining a constant speed during cruise control operations. When this sensor malfunctions or fails, it can lead to problems with the ASCD system, resulting in issues with cruise control functionality and potentially affecting the overall performance of the vehicle.

OBDII Code P1574 Infiniti - ASCD Vehicle Speed Sensor
P1574 Infiniti Code - ASCD Vehicle Speed Sensor

Common Causes of P1574 Infiniti

  1. Faulty ASCD Vehicle Speed Sensor
  2. Wiring or connection issues
  3. ECM communication problems
  4. Sensor calibration errors
  5. Vehicle speedometer discrepancies

Symptoms of P1574 Infiniti

  1. Inoperative cruise control system
  2. Check engine light illuminated
  3. Difficulty maintaining a constant speed while driving
  4. Decreased fuel efficiency

How to Fix P1574 Infiniti

  1. Diagnose the issue using a scan tool to pinpoint the exact cause of the P1574 code.
  2. Inspect the ASCD Vehicle Speed Sensor for any visible damage or malfunction.
  3. Check the wiring and connections associated with the sensor for any signs of wear or disconnection.
  4. Test the ECM communication with the sensor to ensure proper functionality.
  5. Replace the ASCD Vehicle Speed Sensor if necessary and recalibrate the system to clear the code and restore cruise control operation.

Cost to Fix P1574 Infiniti

The typical repair costs for addressing the P1574 code in an Infiniti vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, replacing the ASCD Vehicle Speed Sensor can cost between $150 and $300, including parts and labor. However, additional diagnostic time and potential wiring repairs may increase the overall cost. It's recommended to consult with a reputable auto repair shop for a more accurate estimate based on your vehicle's make and model, as well as the severity of the issue. Remember that labor rates can fluctuate, so it's essential to inquire about rates specific to your location and chosen repair facility.

When is the Code Detected?

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

Need more information about the P1574 Infiniti code?

Need more information on how to fix the P1574 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1574 Infiniti code diagnosed by a professional: Find a repair shop in your area

Information for Specific Infiniti Models

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 Infiniti Code

1. What are the common symptoms of OBDII code P1574 in an Infiniti related to the ASCD Vehicle Speed Sensor?

- Common symptoms include issues with cruise control operation, erratic speedometer readings, and potential stalling or poor acceleration.

2. What can cause the ASCD Vehicle Speed Sensor code P1574 to trigger in an Infiniti?

- The code P1574 may be triggered by a faulty ASCD Vehicle Speed Sensor, damaged wiring or connectors, or issues with the ASCD control unit.

3. How can I diagnose the ASCD Vehicle Speed Sensor code P1574 in my Infiniti?

- To diagnose P1574, you can use an OBDII scanner to read the code, inspect the ASCD Vehicle Speed Sensor and its wiring, and test the sensor's functionality.

4. Is it safe to continue driving my Infiniti with OBDII code P1574 related to the ASCD Vehicle Speed Sensor?

- It is not recommended to drive with the P1574 code present, as it can lead to potential safety issues and affect the vehicle's performance.

5. Can I repair the ASCD Vehicle Speed Sensor code P1574 in my Infiniti myself?

- Depending on your automotive repair skills, you may be able to replace the ASCD Vehicle Speed Sensor or repair wiring issues yourself. However, professional diagnosis and repair are recommended for accurate resolution.

6. Will resetting the OBDII code P1574 related to the ASCD Vehicle Speed Sensor make it go away permanently?

- Simply resetting the code may temporarily clear the warning, but if the underlying issue causing P1574 is not addressed, the code is likely to reappear.

7. Are there any common tricks or tips to troubleshoot the ASCD Vehicle Speed Sensor code P1574 in an Infiniti?

- One useful tip is to check for any visible damage to the sensor and its wiring, ensuring proper connections and cleanliness to improve sensor accuracy.

8. Can a malfunctioning ASCD Vehicle Speed Sensor impact other systems in my Infiniti?

- Yes, a faulty ASCD Vehicle Speed Sensor can impact the vehicle's cruise control system, speedometer accuracy, and overall engine performance.

9. How long does it typically take to repair the OBDII code P1574 related to the ASCD Vehicle Speed Sensor in an Infiniti?

- The repair time can vary depending on the exact cause of the issue, but a professional mechanic can usually diagnose and repair the problem within a few hours to a day.

10. Is the ASCD Vehicle Speed Sensor code P1574 a common issue in Infiniti vehicles?

- While not extremely common, the ASCD Vehicle Speed Sensor code P1574 can occur in certain Infiniti models and should be promptly addressed to ensure proper vehicle operation.

Discuss the causes and fixes for P1574 Infiniti OBDII Code

Submit a New Comment