P1721 Infiniti Code - Vehicle Speed Sensor MTR
Quick Answer
The P1721 Infiniti code specifically refers to an issue with the Vehicle Speed Sensor MTR. Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors, Transmission fluid contamination. 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 Infiniti indicates Vehicle Speed Sensor MTR.
- Common causes
- Common causes include Faulty Vehicle Speed Sensor, Damaged wiring or connectors, Transmission fluid contamination.
- 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.
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Code P1721 Infiniti Description
The P1721 Infiniti code specifically refers to an issue with the Vehicle Speed Sensor MTR. The Vehicle Speed Sensor (VSS) is a crucial component of the vehicle's transmission system, responsible for monitoring the speed of the vehicle and sending this information to the engine control module (ECM). This data is used by the ECM to calculate fuel delivery, shift points, and other important functions that impact the vehicle's performance.
Common Causes of P1721 Infiniti
- Faulty Vehicle Speed Sensor
- Damaged wiring or connectors
- Transmission fluid contamination
- Electronic control module (ECM) issues
- Mechanical problems within the transmission system
Symptoms of P1721 Infiniti
- Inaccurate speedometer readings
- Harsh or delayed shifting
- Check Engine Light illuminated
- Loss of power or acceleration
- Transmission slipping
How to Fix P1721 Infiniti
- Begin by diagnosing the issue by using a scan tool to read the code and determine the exact cause of the problem.
- Inspect the Vehicle Speed Sensor and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
- Check the transmission fluid level and condition. If contaminated, flush and replace the fluid.
- Test the ECM to ensure it is functioning properly. Replace if needed.
- Clear the code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1721 Infiniti
The cost of repairing a P1721 Infiniti code can vary depending on the exact cause of the issue and the labor rates in your area. On average, the cost of replacing a Vehicle Speed Sensor can range from $100 to $300, including parts and labor. However, additional costs may apply if there are other underlying issues that need to be addressed. It's recommended to consult with a qualified mechanic to get an accurate estimate based on your specific vehicle and location. Remember that labor rates can vary widely, so it's a good idea to shop around for the best deal.
When is the Code Detected?
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Information for Specific Infiniti Models
- P1721 2003 Infiniti G35 — Vehicle Speed Sensor MTR
- P1721 2004 Infiniti G35 — Vehicle Speed Sensor MTR
- P1721 2005 Infiniti G35 — Vehicle Speed Sensor MTR
- P1721 2006 Infiniti G35 — Vehicle Speed Sensor MTR
Frequently Asked Questions about P1721 Infiniti Code
1. What is OBDII code P1721 on an Infiniti related to the Vehicle Speed Sensor MTR?
This code indicates a problem with the vehicle speed sensor motor.
2. What are some common symptoms of a P1721 Infiniti code?
Common symptoms include erratic speedometer readings, issues with cruise control, and potential transmission shifting problems.
3. What are some possible causes of the P1721 code in an Infiniti?
Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors, or a malfunctioning speed sensor motor.
4. How can I diagnose the P1721 Infiniti code?
Diagnosis typically involves checking the vehicle speed sensor and its wiring for any visible damage, as well as using a scan tool to monitor sensor readings.
5. What are some repair tips for fixing a P1721 code on an Infiniti?
Repairing the issue may involve replacing the vehicle speed sensor, repairing any damaged wiring, or replacing the speed sensor motor if necessary.
6. Can I drive my Infiniti with a P1721 code?
It is not recommended to drive the vehicle with this code present, as it can lead to inaccurate speed readings and potential transmission issues.
7. Will resetting the OBDII code make the P1721 Infiniti code go away?
Resetting the code may temporarily clear it, but if the underlying issue is not addressed, the code is likely to return.
8. How much does it typically cost to repair a P1721 Infiniti code?
The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $300 or more, including parts and labor.
9. Can a DIY enthusiast fix a P1721 Infiniti code?
Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this code by following repair guides and using the necessary tools.
10. Is it important to address the P1721 code promptly?
Yes, it is crucial to address this code promptly to ensure the proper functioning of the vehicle's speed-related systems and prevent potential transmission issues.
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