P1574 Nissan Code: Navigating Transmission Concerns

So, you’ve come across the P1574 code in your Nissan, and it’s left you wondering what’s gone awry. No need to panic – In this article, I’m here to help you decode its meaning.

I will walk you through the basics of the P1574 code, including why it’s popped up and what steps you can take to make it vanish. Buckle up, as I’m gonna clarify the P1574 code and get your Nissan back on track!

Let’s explore!

P1574 Nissan: A Quick Overview

Go through the P1574 Nissan code summary outlined below!

  • Definition:  ASCD Vehicle Speed Sensor
  • Severity: Medium
  • DIY Skill Level: Intermediate
  • Continue To Drive?: No
  • Estimated Repair Cost: $50 – $500

What Does The P1574 Code Mean In Nissan Vehicles?

The P1574 Nissan Diagnostic Trouble Code (DTC) indicates a problem with the Engine Control Module (ECM) receiving conflicting vehicle speed signals. The ECM receives two speed signals via the Controller Area Network (CAN) communication line. One signal is transmitted from the combination meter, while the other comes from the Transmission Control Module (TCM). These signals are crucial for the operation of the Automatic Speed Control Device (ASCD) system.

When the ECM detects inconsistent or conflicting speed signals, it triggers the P1574 DTC. This code serves as an indicator that there is a communication issue between the combination meter, TCM, and ECM, affecting the ASCD control functionality.

P1574 Nissan
If there is any network code (U code) coming along with P1574, troubleshoot the U code first.
(Credit: maxima.org)

The P1574 trouble code is commonly found in various Nissan models. The following models usually get the P1574 code: Altima, Maxima, Sentra, Rogue, Murano, etc. 

In some cases, the P1574 DTC may be accompanied by additional trouble codes. It is essential to address these associated codes before troubleshooting the P1574. The following are some common codes that may appear alongside P1574: Uxxxx (U code), P0500, P0605, P0607

It is important to diagnose and resolve any accompanying codes alongside the P1574 DTC to ensure a comprehensive repair process and restore proper vehicle functionality.

How Severe Is The P1574 Code In Nissan?

The severity level of the P1574 Nissan code can be considered moderate. While it does not present an immediate safety risk or major drivability issues, it is not advisable to continue driving with this code unresolved. Ignoring the P1574 DTC may result in the loss of cruise control functionality. 

To ensure optimal vehicle performance and safety, it is recommended to address the code promptly. Therefore, seeking assistance from a qualified mechanic can help identify the cause and facilitate the necessary repairs or component replacements. Resolving the P1574 promptly restores the proper operation of the ASCD system, promoting a safer driving experience.

What Are The Signs Of The P1574 Code?

The P1574 Nissan code can manifest in various symptoms. If you are experiencing this code, you may notice one or more of the following:

  • A malfunction indicator lamp (MIL) illuminated
  • Loss of cruise control functionality
  • Inconsistent or erratic speedometer readings

What Causes The P1574 Code in Nissan Vehicles? 

The P1574 Nissan can be caused by various factors. Common causes of this code include:

  • Low brake fluid
  • Wiring or communication problems in the CAN network
  • Faulty combination meter
  • Bad wheel sensor(s)
  • Malfunctioning ABS actuator and ABS control unit
  • Issues with the TCM
  • Faulty ECM

It’s important to note that these are potential causes, and a thorough diagnostic procedure is necessary to determine the underlying issue in your specific vehicle accurately.

Read more: P1777 Nissan Code: A Practical Repair Guide

How To Diagnose And Fix The P1574 Code In Your Nissan?

When your Nissan displays the P1574 code, think of it as your car’s way of telling you it’s having a problem. To tackle this, you’ll need certain tools and parts that are necessary. Following a set of steps in order is important, and you should also see if you can manage to fix it yourself. By sticking to these guidelines, you can increase your chances of successfully dealing with the P1574 code problem in your Nissan.

Essential Tools And Parts

To diagnose and repair the P1574 code, the following tools and parts may be required:

Step-by-Step Procedure

1. DTCs retrieval

Begin by connecting an OBD-II scanner to the vehicle’s OBD-II port. Then, retrieve and record all present DTCs, including the P1574 code.

2. Brake fluid inspection and refill

  • Check the brake fluid level in the vehicle’s brake fluid reservoir. 
  • If the brake fluid is low, top it up to the recommended level. Use the type of brake fluid specified in the vehicle’s service manual.

3. Wiring and connection testings

  • Inspect the wiring connections and harnesses of all the systems above. Look for any visible signs of damage, corrosion, loose connections, or frayed wires. 
  • Use a digital multimeter to check those connections, and consult the wiring diagram for your specific Nissan model. 
  • Compare the readings obtained to the specifications provided in the vehicle’s service manual. 
  • Repair or replace any damaged wiring as necessary.

4. Wheel sensor examination and replacement

  • If the problem persists, inspect the wheel sensors. 
  • Clean the sensors and their mounting surfaces, and check for any damage or excessive debris. 
  • Replace any wheel sensors that are faulty, damaged, or contaminated.

5. ABS actuator and control unit diagnostic testing

  • If the ABS actuator and its control unit are suspected to be the cause of the P1574 code, perform further diagnostic tests. 
  • This may involve using specialized diagnostic tools to assess the ABS actuator’s functionality and communication with the control unit. 
  • Follow the manufacturer’s instructions and guidelines for testing and diagnosing the ABS system.

6. Comprehensive system diagnostics for combination meter, TCM, and ECM

  • If the issue still exists, perform specific tests and procedures outlined in the vehicle’s service manual to diagnose the combination meter, TCM, and ECM. 
  • Replace any faulty system if necessary. 
  • It’s advisable to get help from a professional mechanic to execute this step.

7. Clearing DTCs and final road test

Clear all DTCs using the diagnostic tool and conduct a road test to ensure the P1574 code does not reappear.

This is the tutorial for changing the wheel speed sensor in Nissan.

Read more: C1109 Nissan Code: ABS Voltage Trouble Exposed

DIY Repair Level And Estimated Costs

Diagnosing and repairing the P1574 Nissan code may require intermediate-level automotive diagnostic and repair skills. If you are unfamiliar with the diagnostic procedures or lack the necessary tools, it is advisable to seek assistance from a qualified mechanic or technician.

The cost of repairing the P1574 code can vary depending on the specific cause and the replacement parts required. Now, let’s have a look at an estimated cost breakdown for the primary repair tasks:

Repair TaskEstimated Cost
Brake fluid change$50 – $100
Wheel speed sensor replacement$50 – $200 per sensor
Wiring repair$50 – $150
ABS control module replacement$200 – $500
Combination meter replacement$150 – $500
TCM replacement$200 – $800
ECM replacement $200 – $1000

Please be aware that these cost approximations are not fixed and can differ depending on elements like the type of vehicle, where you are located, and the charges for labor. In order to obtain accurate cost details specific to your vehicle, it is recommended to consult with a mechanic or obtain personalized quotes.

P1574 Nissan Infographic

P1574 Nissan
Check this infographic for the summarized information about this P1574 code on Nissan vehicles.

Final Thoughts

In conclusion, understanding the P1574 code and its implications in the ABS system is crucial for maintaining optimal braking performance and vehicle safety. If you encounter challenges or lack expertise, it is advisable to seek assistance from a qualified professional. 

Stay proactive in addressing ABS system concerns to ensure a safe and reliable driving experience. Stay informed, drive safely, and don’t hesitate to share this valuable information with others. And, drop a comment below if you have any questions. Safe driving!

Learn more about other codes by using our OBD lookup tool!

Reference Sources

  1. NiAltima, P1574 ASCD vehicle speed sensor
  2. AUTONERDZ, Maxima ECM reprogramming data
  3. J.D. Power, What is a front-wheel speed sensor?