P1721 2003 Infiniti G35 Code - Vehicle Speed Sensor MTR
Quick Answer
The P1721 code on a 2003 Infiniti G35 indicates a problem with the Vehicle Speed Sensor (VSS) MTR. Common causes include Faulty VSS MTR, Damaged wiring or connectors, Corrosion on sensor contacts. 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 2003 Infiniti G35 indicates Vehicle Speed Sensor MTR.
- Common causes
- Common causes include Faulty VSS MTR, Damaged wiring or connectors, Corrosion on sensor contacts.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1721 2003 Infiniti G35 Description
The P1721 code on a 2003 Infiniti G35 indicates a problem with the Vehicle Speed Sensor (VSS) MTR. The VSS is a crucial component that monitors the speed of the vehicle and sends this information to the engine control module. This data is used to calculate various parameters such as fuel injection timing, transmission shift points, and ABS operation. When the VSS MTR malfunctions, it can lead to a range of issues affecting the vehicle's performance and drivability.
Common Causes of P1721 2003 Infiniti G35
- Faulty VSS MTR
- Damaged wiring or connectors
- Corrosion on sensor contacts
- Sensor misalignment
- Electronic control module issues
Symptoms of P1721 2003 Infiniti G35
- Inaccurate speedometer readings
- Erratic shifting patterns
- Hesitation during acceleration
- Transmission slippage
- Harsh or delayed shifting
How to Fix P1721 2003 Infiniti G35
- Begin by locating the VSS MTR on the transmission or differential.
- Inspect the wiring and connectors for any damage or corrosion.
- Test the VSS MTR using a multimeter to check for proper resistance and signal output.
- Replace the VSS MTR if it fails the tests, ensuring proper alignment and connection.
- Clear the diagnostic trouble codes and test drive the vehicle to verify the repair.
Cost to Fix P1721 2003 Infiniti G35
The cost of repairing a P1721 code on a 2003 Infiniti G35 can vary depending on the extent of the issue and the cost of parts and labor. Typically, replacing a faulty VSS MTR can range from $150 to $300, with additional costs for diagnostic testing and labor. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your specific circumstances. Keep in mind that labor rates can vary between different locations and types of repair facilities.
When is the Code Detected?
Need more information about the P1721 2003 Infiniti G35 code?
Need more information on how to fix the P1721 2003 Infiniti G35 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1721 2003 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1721 2003 Infiniti G35 Code
1. What are the common symptoms of OBDII code P1721 in a 2003 Infiniti G35?
- Common symptoms include erratic speedometer readings, harsh shifting, and the transmission going into limp mode.
2. What does the OBDII code P1721 for "Vehicle Speed Sensor MTR" indicate in a 2003 Infiniti G35?
- This code specifically points to an issue with the vehicle speed sensor motor circuit.
3. What are the possible causes of OBDII code P1721 in a 2003 Infiniti G35?
- Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors, or a malfunctioning speed sensor motor circuit.
4. How can I diagnose the OBDII code P1721 in my 2003 Infiniti G35?
- A diagnostic scan tool can help identify the specific cause by reading the code and checking the vehicle speed sensor data.
5. Can I continue driving my 2003 Infiniti G35 with OBDII code P1721?
- It is not recommended to drive the vehicle with this code as it can lead to further transmission issues and potential safety hazards.
6. How can I repair OBDII code P1721 in my 2003 Infiniti G35?
- Repair involves inspecting and testing the vehicle speed sensor, checking the wiring harness, and replacing any faulty components as needed.
7. Is it possible to reset the OBDII code P1721 in a 2003 Infiniti G35 without making repairs?
- Resetting the code without addressing the underlying issue may temporarily clear the warning light, but the problem will likely reoccur.
8. Will the OBDII code P1721 cause any lasting damage to my 2003 Infiniti G35 if left unresolved?
- Ignoring this code can potentially lead to further damage to the transmission and other related components over time.
9. How much does it typically cost to repair OBDII code P1721 in a 2003 Infiniti G35?
- The cost can vary depending on the specific cause of the issue, but repairs may range from $100 to $300 or more, including parts and labor.
10. Can a DIY enthusiast fix OBDII code P1721 in a 2003 Infiniti G35, or is it best left to professionals?
- While some experienced DIYers may be able to tackle this repair, it is recommended to consult a professional mechanic for accurate diagnosis and proper resolution.
Discuss the causes and fixes for P1721 2003 Infiniti G35 OBDII Code
Code P1721 2003 Infiniti G35 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.