Engine-CodesInfiniti – P0720 2003 Infiniti G35

P0720 2003 Infiniti G35 Code - Vehicle Speed Sensor

Quick Answer

The P0720 code in a 2003 Infiniti G35 indicates a fault with the vehicle speed sensor. Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors, Corrosion or debris affecting sensor operation. 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 2003 Infiniti G35 indicates Vehicle Speed Sensor.
Common causes
Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors, Corrosion or debris affecting sensor operation.
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.
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0720 2003 Infiniti G35 Description

The P0720 code in a 2003 Infiniti G35 indicates a fault with the vehicle speed sensor. This sensor plays a crucial role in the proper functioning of the vehicle's transmission system by monitoring the speed of the vehicle and sending this information to the engine control module. The engine control module uses this data to determine the appropriate shift points for the transmission, fuel injection timing, and other critical functions.

OBDII Code P0720 2003 Infiniti G35 - Vehicle Speed Sensor
P0720 2003 Infiniti G35 Code - Vehicle Speed Sensor

Common Causes of P0720 2003 Infiniti G35

  1. Faulty vehicle speed sensor
  2. Damaged wiring or connectors
  3. Corrosion or debris affecting sensor operation
  4. Issues with the transmission control module
  5. Electrical system problems

Symptoms of P0720 2003 Infiniti G35

  1. Harsh or erratic shifting
  2. Inaccurate speedometer readings
  3. Limp mode activation
  4. Reduced fuel efficiency
  5. Check Engine Light illuminated

How to Fix P0720 2003 Infiniti G35

  1. Diagnose the issue by using a scan tool to retrieve the fault code and inspect the vehicle speed sensor and related components.
  2. Test the vehicle speed sensor using a multimeter to check for proper operation.
  3. Replace the faulty vehicle speed sensor if it is determined to be the cause of the issue.
  4. Inspect and repair any damaged wiring or connectors connected to the sensor.
  5. Clear the fault code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0720 2003 Infiniti G35

The typical repair costs for a faulty vehicle speed sensor in a 2003 Infiniti G35 can range from $150 to $300, including parts and labor. However, it's essential to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships and lower at independent shops. It's recommended to check local rates for a more accurate estimate.

Tech Notes for P0720 2003 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 2003 Infiniti G35 Code

1. What does OBDII code P0720 on a 2003 Infiniti G35 mean?

- OBDII code P0720 in a 2003 Infiniti G35 indicates a problem with the vehicle speed sensor circuit.

2. What are the common symptoms of a P0720 code in a 2003 Infiniti G35?

- Common symptoms of a P0720 code include erratic speedometer readings, harsh shifting, and the transmission going into limp mode.

3. What are the possible causes of a P0720 code in a 2003 Infiniti G35?

- Possible causes of a P0720 code can include a faulty vehicle speed sensor, damaged wiring or connectors, or issues with the transmission control module.

4. How can I diagnose the P0720 code on my 2003 Infiniti G35?

- To diagnose a P0720 code, you can use a scan tool to check for the code, inspect the vehicle speed sensor and its wiring, and perform a road test to monitor speed sensor data.

5. Can I drive my 2003 Infiniti G35 with a P0720 code?

- It is not recommended to drive your Infiniti G35 with a P0720 code as it can lead to transmission issues and potential safety hazards.

6. How do I repair a P0720 code on my 2003 Infiniti G35?

- To repair a P0720 code, you may need to replace the vehicle speed sensor, repair damaged wiring, or reset the transmission control module.

7. Are there any DIY tips for fixing a P0720 code on a 2003 Infiniti G35?

- DIY tips for fixing a P0720 code include checking and cleaning the speed sensor connections, inspecting the sensor for physical damage, and ensuring proper wiring connections.

8. Can a P0720 code in a 2003 Infiniti G35 cause other issues?

- Yes, a P0720 code can cause issues such as incorrect shifting patterns, poor fuel economy, and potential damage to the transmission over time.

9. How much does it cost to repair a P0720 code on a 2003 Infiniti G35?

- The cost to repair a P0720 code can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Will resetting the P0720 code on a 2003 Infiniti G35 make it go away permanently?

- Resetting the P0720 code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear. It's crucial to diagnose and repair the root cause of the problem.

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