AutoCodes – Infiniti – P0720 2001 Infiniti G20

P0720 2001 Infiniti G20 Code - Vehicle Speed Sensor

Quick Answer

The speed sensor (revolution sensor) detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. Common causes include Faulty Revolution Sensor, Revolution Sensor harness is open or shorted, Revolution Sensor circuit poor electrical connection. 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 Revolution Sensor, Revolution Sensor harness is open or shorted, Revolution Sensor circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 5,894
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 08, 2019
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Code P0720 2001 Infiniti G20 Description

The speed sensor (revolution sensor) detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the Transmission Control Module (TCM) which converts it into vehicle speed.

2001 Infiniti G20 Speed Sensor (Revolution Sensor) Location
OBDII Code P0720 2001 Infiniti G20 - Vehicle Speed Sensor - AutoCodes.com
P0720 2001 Infiniti G20 Code - Vehicle Speed Sensor

What are the Possible Causes of the DTC P0720 2001 Infiniti G20?

  • Faulty Revolution Sensor
  • Revolution Sensor harness is open or shorted
  • Revolution Sensor circuit poor electrical connection

How to Fix the DTC P0720 2001 Infiniti G20?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0720 2001 Infiniti G20 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 P0720 2001 Infiniti G20 code?

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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

  • 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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