AutoCodes – Infiniti – P1574 Infiniti

P1574 Infiniti Code - ASCD Vehicle Speed Sensor

Quick Answer

The Engine Control Module (ECM) receives two vehicle speed sensor signals via Communication Area Network (CAN) communication line. Common causes include Harness or connectors of the Communication Area Network (CAN) communication line is open or shorted, Combination meter circuit is open or shorted, Faulty Combination meter. 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 Harness or connectors of the Communication Area Network (CAN) communication line is open or shorted, Combination meter circuit is open or shorted, Faulty Combination meter.
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 29,182
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 18, 2019
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Code P1574 Infiniti Description

The Engine Control Module (ECM) receives two vehicle speed sensor signals via Communication Area Network (CAN) communication line. One is sent from combination meter, and the other is from TCM (Transmission control module). The ECM uses these signals for Automatic Speed Control Module (ASCD) control.
OBDII Code P1574 Infiniti - ASCD Vehicle Speed Sensor - AutoCodes.com
P1574 Infiniti Code - ASCD Vehicle Speed Sensor

What are the Possible Causes of the DTC P1574 Infiniti?

  • Harness or connectors of the Communication Area Network (CAN) communication line is open or shorted
  • Combination meter circuit is open or shorted
  • Faulty Combination meter
  • Faulty Vehicle speed sensor
  • Faulty Transmission Control Module

How to Fix the DTC P1574 Infiniti?

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 P1574 Infiniti 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 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

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