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P0720 2001 Infiniti G20 Code - Vehicle Speed Sensor

Quick Answer

The P0720 code in a 2001 Infiniti G20 indicates a problem with the vehicle speed sensor. Common causes include Faulty vehicle speed sensor, Damaged or corroded wiring/connectors, Issues with the transmission control module. 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 2001 Infiniti G20 indicates Vehicle Speed Sensor.
Common causes
Common causes include Faulty vehicle speed sensor, Damaged or corroded wiring/connectors, Issues with the transmission control module.
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 06, 2024
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Code P0720 2001 Infiniti G20 Description

The P0720 code in a 2001 Infiniti G20 indicates a problem with the vehicle speed sensor. The vehicle speed sensor (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 issues that affect the vehicle's performance.

OBDII Code P0720 2001 Infiniti G20 - Vehicle Speed Sensor
P0720 2001 Infiniti G20 Code - Vehicle Speed Sensor

Common Causes of P0720 2001 Infiniti G20

  1. Faulty vehicle speed sensor
  2. Damaged or corroded wiring/connectors
  3. Issues with the transmission control module
  4. ECM software or hardware problems
  5. Mechanical issues with the VSS gear or reluctor ring

Symptoms of P0720 2001 Infiniti G20

  1. Inaccurate speedometer readings
  2. Harsh shifting or reluctance to shift gears
  3. Loss of power or acceleration
  4. Check Engine Light illuminated
  5. ABS or traction control system errors

How to Fix P0720 2001 Infiniti G20

  1. Diagnose the issue by using a scan tool to check for the P0720 code and perform a visual inspection of the VSS and related components.
  2. Test the VSS using a multimeter to check for proper voltage and resistance readings.
  3. Replace the faulty VSS if it fails testing, ensuring proper installation and alignment.
  4. Inspect and repair any damaged wiring or connectors leading to the VSS.
  5. Clear the error code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0720 2001 Infiniti G20

The typical repair cost for a P0720 code related to the vehicle speed sensor in a 2001 Infiniti G20 can range from $150 to $300 for parts and labor. However, it's important to note that actual costs may vary depending on the location, the specific repair shop, and any additional issues that may be discovered during the diagnostic process. It's recommended to consult with a trusted mechanic or service center for a more accurate estimate.

What does this mean?

Tech Notes for P0720 2001 Infiniti G20

On most Infiniti vehicles, the vehicle speed sensor is called Revolution Sensor. If there are no mechanical problems in the transmission, usually replacing the revolution sensor takes care of the problem.

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 2001 Infiniti G20 Code

1. What are common symptoms of OBDII code P0720 in a 2001 Infiniti G20 related to the Vehicle Speed Sensor?

- Common symptoms include erratic speedometer readings, incorrect shifting patterns, and the vehicle going into limp mode.

2. What are some possible causes of OBDII code P0720 in a 2001 Infiniti G20?

- The most common cause is a faulty Vehicle Speed Sensor (VSS), damaged wiring or connectors, or issues with the transmission control module.

3. How can I diagnose the Vehicle Speed Sensor in my 2001 Infiniti G20 when facing code P0720?

- Use a multimeter to test the VSS for proper voltage output, inspect the wiring for any damage, and check for loose or corroded connectors.

4. Can I drive my Infiniti G20 with OBDII code P0720 caused by a faulty Vehicle Speed Sensor?

- It is not recommended to drive the vehicle with a malfunctioning VSS as it can lead to inaccurate speed readings and potential transmission issues.

5. How much does it typically cost to repair the Vehicle Speed Sensor on a 2001 Infiniti G20 with code P0720?

- The cost of repairing the VSS can vary depending on the extent of the issue, but it generally ranges from $150 to $300, including parts and labor.

6. Are there any DIY tips for fixing OBDII code P0720 related to the Vehicle Speed Sensor in a 2001 Infiniti G20?

- DIY enthusiasts can attempt to replace the VSS themselves by following online tutorials and using basic tools. However, it's recommended to have some mechanical knowledge.

7. Can a malfunctioning Vehicle Speed Sensor affecting OBDII code P0720 impact the fuel efficiency of a 2001 Infiniti G20?

- Yes, a faulty VSS can lead to inaccurate speed readings, affecting the transmission's shifting patterns and potentially impacting fuel efficiency.

8. Will resetting the OBDII code P0720 related to the Vehicle Speed Sensor on my 2001 Infiniti G20 make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue with the VSS is not fixed, the code is likely to reappear.

9. Is it necessary to replace the Vehicle Speed Sensor if it is diagnosed as the cause of OBDII code P0720 in a 2001 Infiniti G20?

- Yes, it is recommended to replace the faulty VSS to resolve code P0720 and ensure proper functioning of the vehicle's speedometer and transmission.

10. Can a damaged Vehicle Speed Sensor causing OBDII code P0720 in a 2001 Infiniti G20 lead to safety concerns?

- A malfunctioning VSS can potentially affect the vehicle's speed control system, leading to safety concerns such as inaccurate speed readings and unpredictable transmission behavior.

Discuss the causes and fixes for P0720 2001 Infiniti G20 OBDII Code

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  • Had engine light and code p0720 along with p0420. Changed the VSS on trans and cleared both codes. Problem with acceleration in gear was gone on a 2001 Infiniti I30.

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