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P1574 2004 Infiniti G35 Code - ASCD Vehicle Speed Sensor

Quick Answer

The P1574 code on a 2004 Infiniti G35 indicates a problem with the ASCD (Automatic Speed Control Device) vehicle speed sensor. Common causes include Faulty ASCD vehicle speed sensor, Damaged wiring or connectors related to the sensor, Corrosion or debris affecting sensor performance. 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 2004 Infiniti G35 indicates ASCD Vehicle Speed Sensor.
Common causes
Common causes include Faulty ASCD vehicle speed sensor, Damaged wiring or connectors related to the sensor, Corrosion or debris affecting sensor performance.
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 17, 2024
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Code P1574 2004 Infiniti G35 Description

The P1574 code on a 2004 Infiniti G35 indicates a problem with the ASCD (Automatic Speed Control Device) vehicle speed sensor. This sensor is responsible for monitoring the vehicle's speed and relaying that information to the engine control module to help regulate the vehicle's speed. When this sensor malfunctions or fails, it can lead to issues with the vehicle's cruise control system, causing it to not function properly or at all.

OBDII Code P1574 2004 Infiniti G35 - ASCD Vehicle Speed Sensor
P1574 2004 Infiniti G35 Code - ASCD Vehicle Speed Sensor

Common Causes of P1574 2004 Infiniti G35

  1. Faulty ASCD vehicle speed sensor
  2. Damaged wiring or connectors related to the sensor
  3. Corrosion or debris affecting sensor performance
  4. Issues with the engine control module
  5. Electrical problems within the vehicle's system

Symptoms of P1574 2004 Infiniti G35

  1. Inoperative cruise control system
  2. Cruise control engaging intermittently
  3. Speedometer fluctuations
  4. Check Engine Light illuminated
  5. Decreased fuel efficiency

How to Fix P1574 2004 Infiniti G35

  1. Begin by diagnosing the issue using a scan tool to confirm the P1574 code and pinpoint the exact cause.
  2. Inspect the ASCD vehicle speed sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
  3. Test the sensor's functionality using a multimeter to ensure it is sending accurate speed data to the engine control module.
  4. Clear the diagnostic trouble codes from the vehicle's system and test the cruise control function to verify that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying electrical issues or module malfunctions.

Cost to Fix P1574 2004 Infiniti G35

The cost of repairing the ASCD vehicle speed sensor on a 2004 Infiniti G35 can vary depending on the specific cause of the issue. On average, the parts for this repair can range from $50 to $150, while labor costs may be between $100 and $200. Overall, the total repair cost could be around $150 to $350. It's important to note that these estimates are general and actual costs may differ based on factors such as location, labor rates, and the extent of the repair needed. It's recommended to consult with a qualified mechanic or repair shop for a more accurate cost estimate.

What does this mean?

Tech Notes for P1574 2004 Infiniti G35

If P1574 is displayed with U1000, U1001, P0500 or P0605 perform the other trouble diagnosis for U1000, U1001, P0500 or P0605 first.

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 2004 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1574 in a 2004 Infiniti G35 related to the ASCD Vehicle Speed Sensor?

The common symptoms include issues with the cruise control system, erratic speedometer readings, and an illuminated Check Engine Light.

2. What can cause the OBDII code P1574 in a 2004 Infiniti G35?

The ASCD Vehicle Speed Sensor in the 2004 Infiniti G35 may trigger the P1574 code due to a faulty vehicle speed sensor, damaged wiring, or a malfunctioning ASCD control unit.

3. How can I diagnose the ASCD Vehicle Speed Sensor issue triggering code P1574 in my 2004 Infiniti G35?

Diagnosing the problem involves checking the vehicle speed sensor's electrical connections, inspecting the wiring harness for damage, and testing the ASCD control unit for proper functionality.

4. Can a DIY enthusiast repair the OBDII code P1574 in a 2004 Infiniti G35 at home?

Depending on your automotive repair skills, you may be able to replace the faulty vehicle speed sensor or repair damaged wiring yourself. However, diagnosing and repairing the ASCD control unit may require professional expertise.

5. Will driving with the OBDII code P1574 in a 2004 Infiniti G35 cause any further damage?

Continuing to drive with the P1574 code triggered may result in unreliable cruise control operation and inaccurate speedometer readings. It is recommended to address the issue promptly to avoid potential safety hazards.

6. How much does it typically cost to repair the ASCD Vehicle Speed Sensor issue causing code P1574 in a 2004 Infiniti G35?

The cost of repairs can vary depending on the exact cause of the problem. Replacing a faulty vehicle speed sensor or repairing wiring may cost a few hundred dollars, while repairing or replacing the ASCD control unit could be more expensive.

7. Can resetting the Check Engine Light resolve the OBDII code P1574 in a 2004 Infiniti G35?

Resetting the Check Engine Light may temporarily clear the code, but it will likely reappear if the underlying issue with the ASCD Vehicle Speed Sensor is not addressed.

8. Is it safe to drive my 2004 Infiniti G35 with the OBDII code P1574 related to the ASCD Vehicle Speed Sensor?

While you can still drive your vehicle with the P1574 code triggered, it is important to be aware of potential issues with the cruise control system and speedometer accuracy. It is recommended to have the problem diagnosed and repaired as soon as possible.

9. Can extreme weather conditions affect the ASCD Vehicle Speed Sensor and trigger code P1574 in a 2004 Infiniti G35?

Extreme temperatures or moisture can potentially impact the performance of the vehicle speed sensor or the wiring connections, leading to the triggering of the P1574 code. Proper insulation and maintenance can help mitigate these effects.

10. How long does it take to repair the ASCD Vehicle Speed Sensor issue causing code P1574 in a 2004 Infiniti G35?

The repair time can vary depending on the exact cause of the problem and the availability of parts. Replacing a faulty sensor or repairing wiring may take a few hours, while addressing issues with the ASCD control unit could require more time.

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