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P0720 2005 Infiniti G35 Code - Vehicle Speed Sensor

Quick Answer

The P0720 code on a 2005 Infiniti G35 indicates a problem with the vehicle speed sensor. Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors, ECM 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
P0720 2005 Infiniti G35 indicates Vehicle Speed Sensor.
Common causes
Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors, ECM 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 Sep 16, 2024
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Code P0720 2005 Infiniti G35 Description

The P0720 code on a 2005 Infiniti G35 indicates a problem with the vehicle speed sensor. The vehicle speed sensor, also known as VSS, is a crucial component that monitors the speed of the vehicle and sends this information to the engine control module (ECM). The ECM uses this data to adjust various systems such as fuel injection, ignition timing, and transmission shifting. When the VSS malfunctions or fails, it can lead to a variety of performance issues and potentially affect the overall drivability of the vehicle.

OBDII Code P0720 2005 Infiniti G35 - Vehicle Speed Sensor
P0720 2005 Infiniti G35 Code - Vehicle Speed Sensor

Common Causes of P0720 2005 Infiniti G35

  1. Faulty vehicle speed sensor
  2. Damaged wiring or connectors
  3. ECM malfunction
  4. Transmission issues
  5. Speed sensor gear tooth damage

Symptoms of P0720 2005 Infiniti G35

  1. Inaccurate speedometer readings
  2. Rough shifting or hesitation during acceleration
  3. Poor fuel efficiency
  4. Engine stalling
  5. Check Engine Light illuminated

How to Fix P0720 2005 Infiniti G35

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and inspect the vehicle speed sensor and related components.
  2. Test the vehicle speed sensor using a multimeter to check for proper resistance and signal output.
  3. Replace the faulty vehicle speed sensor if it fails the tests, ensuring proper installation and connection.
  4. Clear the trouble code from the ECM's memory using the scan tool and test drive the vehicle to confirm that the issue has been resolved.
  5. If the problem persists, further diagnosis may be needed to identify any underlying issues with the wiring, connectors, or ECM.

Cost to Fix P0720 2005 Infiniti G35

The cost of repairing a P0720 code on a 2005 Infiniti G35 can vary depending on the specific cause of the issue and the labor rates in your area. Typically, replacing the vehicle speed sensor can cost between $150 and $250, including parts and labor. However, additional diagnostic time and potential repairs to related components may increase the total cost. It's recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's specific needs. Keep in mind that labor rates can vary between different shops and locations.

What does this mean?

Tech Notes for P0720 2005 Infiniti G35

On most Infiniti vehicles, the vehicle speed sensor is called Revolution Sensor

When is the Code Detected?

Diagnostic trouble code is detected when Transmission Control Module (TCM) does not receive the proper voltage signal from the sensor.

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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 P0720 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0720 in a 2005 Infiniti G35?

The common symptoms include erratic speedometer readings, stalling at low speeds, harsh shifting, and the inability to shift gears properly.

2. What does OBDII code P0720 in a 2005 Infiniti G35 indicate?

Code P0720 indicates a malfunction in the vehicle speed sensor circuit, specifically the output speed sensor.

3. What are the possible causes of OBDII code P0720 in a 2005 Infiniti G35?

Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors in the speed sensor circuit, or a malfunctioning transmission control module.

4. How can I diagnose the cause of OBDII code P0720 in my 2005 Infiniti G35?

Diagnosing the issue involves checking the vehicle speed sensor for proper operation, inspecting the wiring and connectors for damage, and testing the transmission control module for faults.

5. Can I still drive my 2005 Infiniti G35 with OBDII code P0720?

It is not recommended to drive the vehicle with code P0720 as it can lead to further damage to the transmission and affect the overall drivability of the car.

6. How can I repair OBDII code P0720 in my 2005 Infiniti G35?

Repairing the issue involves replacing the faulty vehicle speed sensor, repairing any damaged wiring or connectors, and clearing the trouble codes from the vehicle's computer.

7. Is it possible to reset OBDII code P0720 in a 2005 Infiniti G35 without fixing the underlying issue?

Resetting the code without fixing the underlying problem will only temporarily clear the error code, and the issue will likely resurface once the vehicle is driven again.

8. Can a DIY enthusiast fix OBDII code P0720 in a 2005 Infiniti G35?

While some DIY enthusiasts may be able to replace the vehicle speed sensor themselves, diagnosing and repairing electrical issues related to the code may require professional help.

9. How much does it cost to fix OBDII code P0720 in a 2005 Infiniti G35?

The cost of fixing code P0720 can vary depending on the extent of the issue and whether you choose to do the repairs yourself or take the car to a professional mechanic.

10. Will fixing OBDII code P0720 improve the performance of my 2005 Infiniti G35?

Fixing the code will restore proper operation of the vehicle speed sensor and transmission, which should improve the overall performance and drivability of the vehicle.

Discuss the causes and fixes for P0720 2005 Infiniti G35 OBDII Code

Submit a New Comment

  • Does anyone have a picture where the output speed sensor is located on 2005 Infiniti g35 sedan

    Reply to Comment

  • The Speed Sensor on your vehicle it is also called "Revolution Sensor" and is part of the Transmission Valve Body (Control Valve). Unfortunately the Revolution Sensor can not be replace by it self, you have to replace the Valve Body.

    Image

    Click here to enlarge image

    Reply to Comment