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P0720 2003 Nissan Altima Sedan Code - Vehicle Speed Sensor

Quick Answer

The P0720 code for a 2003 Nissan Altima Sedan refers to an issue with the Vehicle Speed Sensor (VSS). Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors related to the VSS, Corrosion or debris affecting the VSS. 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 Nissan Altima Sedan indicates Vehicle Speed Sensor.
Common causes
Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors related to the VSS, Corrosion or debris affecting the VSS.
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 08, 2024
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Code P0720 2003 Nissan Altima Sedan Description

The P0720 code for a 2003 Nissan Altima Sedan refers to an issue with the Vehicle Speed Sensor (VSS). The VSS is a crucial component that monitors the speed of the vehicle and sends this information to the engine control module (ECM) to regulate various functions such as fuel injection, ignition timing, and transmission shifting. When this sensor malfunctions or fails, it can lead to a range of performance issues and potentially cause long-term damage to the vehicle.

OBDII Code P0720 2003 Nissan Altima Sedan - Vehicle Speed Sensor
P0720 2003 Nissan Altima Sedan Code - Vehicle Speed Sensor

Common Causes of P0720 2003 Nissan Altima Sedan

  1. Faulty Vehicle Speed Sensor
  2. Damaged wiring or connectors related to the VSS
  3. Corrosion or debris affecting the VSS
  4. ECM software issues
  5. Transmission issues affecting VSS readings

Symptoms of P0720 2003 Nissan Altima Sedan

  1. Erratic shifting or hesitation during acceleration
  2. Inaccurate speedometer readings
  3. Harsh shifting or difficulty changing gears
  4. Stalling or loss of power while driving

How to Fix P0720 2003 Nissan Altima Sedan

  1. Begin by locating the VSS on the transmission or axle.
  2. Inspect the wiring and connectors for any damage or corrosion.
  3. Test the VSS using a multimeter to check for proper functionality.
  4. Replace the VSS if it fails the test or shows signs of damage.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0720 2003 Nissan Altima Sedan

The typical repair cost for a P0720 code related to a faulty Vehicle Speed Sensor can range from $100 to $300, including parts and labor. However, 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. It's recommended to check local rates for a more accurate estimate before proceeding with the repair.

What does this mean?

Tech Notes for P0720 2003 Nissan Altima Sedan

The vehicle speed sensor is called Revolution Sensor on Nissan Altima vehicles. Usually replacing the sensor take care of the P0720 code.

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 Nissan Altima Sedan Code

1. What does OBDII code P0720 mean for a 2003 Nissan Altima Sedan?

Code P0720 indicates a problem with the vehicle speed sensor in a 2003 Nissan Altima Sedan, affecting the transmission's ability to shift properly.

2. What are the common symptoms of a P0720 code in a 2003 Nissan Altima Sedan?

Common symptoms include erratic speedometer readings, harsh shifting, delayed shifting, and even the transmission going into a limp mode.

3. What are the possible causes of a P0720 code in a 2003 Nissan Altima Sedan?

The P0720 code in a 2003 Nissan Altima Sedan can be caused by a faulty vehicle speed sensor, damaged wiring or connectors, or issues with the transmission control module.

4. How can I diagnose a P0720 code in my 2003 Nissan Altima Sedan?

Diagnosis involves checking the vehicle speed sensor and its wiring for damage, testing the sensor's output signal, and scanning the transmission control module for related trouble codes.

5. Can a faulty vehicle speed sensor cause other issues besides the P0720 code in a 2003 Nissan Altima Sedan?

Yes, a faulty vehicle speed sensor can also cause issues like inaccurate speedometer readings, ABS system malfunctions, and cruise control problems.

6. How can I repair a P0720 code in a 2003 Nissan Altima Sedan?

Repairing a P0720 code typically involves replacing the faulty vehicle speed sensor, repairing damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

7. Is it safe to continue driving with a P0720 code in a 2003 Nissan Altima Sedan?

It is not recommended to drive with a P0720 code as it can lead to transmission issues and potentially unsafe driving conditions. It's best to address the problem promptly.

8. Can I fix a P0720 code in a 2003 Nissan Altima Sedan on my own?

If you have the necessary tools and mechanical skills, you may be able to replace the vehicle speed sensor yourself. However, if you're unsure, it's best to consult a professional mechanic.

9. How much does it typically cost to repair a P0720 code in a 2003 Nissan Altima Sedan?

The cost of repairing a P0720 code can vary depending on the exact cause of the issue, but it generally ranges from $100 to $300 for parts and labor.

10. Will resetting the trouble codes clear a P0720 code in a 2003 Nissan Altima Sedan?

While resetting the trouble codes may temporarily clear the P0720 code, it's important to address the underlying issue causing the code to prevent it from reoccurring.

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