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P1721 2006 Infiniti G35 Code - Vehicle Speed Sensor MTR

Quick Answer

The P1721 code on a 2006 Infiniti G35 refers to a problem with the Vehicle Speed Sensor (VSS) MTR. Common causes include Faulty Vehicle Speed Sensor MTR, Wiring or connection issues, Damaged or corroded sensor/motor components. 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
P1721 2006 Infiniti G35 indicates Vehicle Speed Sensor MTR.
Common causes
Common causes include Faulty Vehicle Speed Sensor MTR, Wiring or connection issues, Damaged or corroded sensor/motor components.
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 07, 2024
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Code P1721 2006 Infiniti G35 Description

The P1721 code on a 2006 Infiniti G35 refers to a problem with the Vehicle Speed Sensor (VSS) MTR. The VSS is a crucial component in the vehicle's transmission system that monitors the speed of the vehicle and sends this information to the engine control module (ECM). This code indicates that there is an issue with the VSS motor, which could lead to inaccurate speed readings and affect the vehicle's performance.

OBDII Code P1721 2006 Infiniti G35 - Vehicle Speed Sensor MTR
P1721 2006 Infiniti G35 Code - Vehicle Speed Sensor MTR

Common Causes of P1721 2006 Infiniti G35

  1. Faulty Vehicle Speed Sensor MTR
  2. Wiring or connection issues
  3. Damaged or corroded sensor/motor components
  4. ECM malfunction
  5. Transmission fluid contamination

Symptoms of P1721 2006 Infiniti G35

  1. Inaccurate speedometer readings
  2. Harsh shifting or delayed shifting of gears
  3. Transmission slipping or difficulty engaging gears
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P1721 2006 Infiniti G35

  1. Diagnose the issue using a scan tool to confirm the P1721 code and inspect the VSS MTR for any visible damage.
  2. Test the VSS MTR using a multimeter to check for proper voltage and resistance values.
  3. Replace the faulty VSS MTR if necessary, ensuring proper installation and connection.
  4. Clear the diagnostic trouble codes and reset the ECM to relearn the new VSS MTR.
  5. Test drive the vehicle to confirm the repair and ensure the symptoms have been resolved.

Cost to Fix P1721 2006 Infiniti G35

The cost of repairing a faulty Vehicle Speed Sensor MTR can vary depending on the extent of the damage and the labor rates in your area. On average, the parts for this repair can range from $100 to $300, while the labor costs can be between $100 and $300. Therefore, the total cost for fixing the P1721 code on a 2006 Infiniti G35 could be in the range of $200 to $600. Keep in mind that prices can fluctuate based on the specific diagnosis and repair process, so it's advisable to consult with a trusted mechanic or auto repair shop for an accurate estimate.

When is the Code Detected?

TCM does not receive the proper vehicle speed sensor MTR signal (input by CAN communication) from combination meter.

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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 P1721 2006 Infiniti G35 Code

1. What does OBDII code P1721 mean for a 2006 Infiniti G35?

The code P1721 on a 2006 Infiniti G35 indicates a problem with the Vehicle Speed Sensor MTR, which is responsible for monitoring the vehicle's speed.

2. What are the common symptoms of OBDII code P1721 in a 2006 Infiniti G35?

Common symptoms of code P1721 in a 2006 Infiniti G35 may include erratic speedometer readings, issues with the cruise control, and potential transmission shifting problems.

3. What are the possible causes of OBDII code P1721 in a 2006 Infiniti G35?

The most common causes of code P1721 in a 2006 Infiniti G35 include a faulty Vehicle Speed Sensor MTR, damaged wiring or connectors related to the sensor, or a malfunctioning speedometer.

4. How can I diagnose the issue causing OBDII code P1721 in my 2006 Infiniti G35?

Diagnosing the issue causing code P1721 may involve inspecting the Vehicle Speed Sensor MTR and its wiring for any visible damage, testing the sensor's output signal, and checking the speedometer for accuracy.

5. Can I still drive my 2006 Infiniti G35 with OBDII code P1721?

It is not recommended to continue driving your 2006 Infiniti G35 with an active P1721 code, as it can lead to potential transmission issues and inaccurate speed readings, affecting the vehicle's performance and safety.

6. How can I repair OBDII code P1721 in a 2006 Infiniti G35?

Repairing code P1721 may involve replacing the Vehicle Speed Sensor MTR, repairing or replacing damaged wiring or connectors, and clearing the code with an OBDII scanner.

7. Are there any DIY tips for fixing OBDII code P1721 in a 2006 Infiniti G35?

While some basic troubleshooting like checking the sensor's connections and wiring can be done by DIY enthusiasts, diagnosing and repairing code P1721 may require specialized tools and expertise, so it's advisable to consult a professional mechanic.

8. Will resetting the OBDII code P1721 in my 2006 Infiniti G35 make the issue go away?

Resetting the code may temporarily clear the warning light, but if the underlying issue causing code P1721 is not addressed, the code is likely to reappear once the problem is detected again.

9. How much does it typically cost to repair OBDII code P1721 in a 2006 Infiniti G35?

The cost of repairing code P1721 in a 2006 Infiniti G35 can vary depending on the cause of the issue, the labor rates in your area, and whether you choose to go to a dealership or an independent mechanic. Expect costs for parts and labor.

10. Is OBDII code P1721 a common issue in 2006 Infiniti G35 vehicles?

While not extremely common, OBDII code P1721 related to the Vehicle Speed Sensor MTR can occur in 2006 Infiniti G35 models due to sensor wear, wiring issues, or other factors. Regular maintenance and prompt diagnosis can help prevent this problem.

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