P1720 Nissan Code - Vehicle Speed Meter Circuit Malfunction
Quick Answer
The Engine Control Module (ECM) receives two vehicle speed sensor signals via the Control Area Network (CAN) communication line. Common causes include VDC/TCS/ABS to ECM circuit harness is open or shorted, TCM to ECM circuit harness is open or shorted, VDC/TCS/ABS to ECM circuit connectors. 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
- P1720 Nissan indicates Vehicle Speed Meter Circuit Malfunction.
- Common causes
- Common causes include VDC/TCS/ABS to ECM circuit harness is open or shorted, TCM to ECM circuit harness is open or shorted, VDC/TCS/ABS to ECM circuit connectors.
- 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.
Code P1720 Nissan Description
What are the Possible Causes of the DTC P1720 Nissan?
- VDC/TCS/ABS to ECM circuit harness is open or shorted
- TCM to ECM circuit harness is open or shorted
- VDC/TCS/ABS to ECM circuit connectors
- TCM to ECM circuit connectors
- Faulty revolution sensor
How to Fix the DTC P1720 Nissan?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1720 Nissan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1720 Nissan code?
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Need Help with the Code?
Get the P1720 Nissan code diagnosed by a professional: Find a repair shop in your area
Information for Specific Nissan Models
- P1720 2008 Nissan Altima Sedan — Vehicle Speed Meter Circuit Malfunction
- P1720 2009 Nissan Altima Sedan — Vehicle Speed Meter Circuit Malfunction
- P1720 2010 Nissan Altima Sedan — Vehicle Speed Meter Circuit Malfunction
- P1720 2011 Nissan Altima Sedan — Vehicle Speed Meter Circuit Malfunction
- P1720 2012 Nissan Altima Sedan — Vehicle Speed Meter Circuit Malfunction
Frequently Asked Questions about P1720 Nissan Code
1. What are the common symptoms of OBDII code P1720 in a Nissan?
- Common symptoms include erratic speedometer readings, inoperative speedometer, and illuminated warning lights on the dashboard.
2. What can cause the OBDII code P1720 in a Nissan?
- The code P1720 is typically triggered by issues such as damaged wiring or connectors in the vehicle speed sensor circuit, a faulty vehicle speed sensor, or a malfunctioning instrument cluster.
3. How can I diagnose the OBDII code P1720 in my Nissan?
- Diagnosis involves checking the wiring and connectors in the vehicle speed sensor circuit for any damage, testing the vehicle speed sensor for proper operation, and verifying the signals sent to the engine control module.
4. Can a faulty instrument cluster cause the OBDII code P1720 in a Nissan?
- Yes, a malfunctioning instrument cluster can potentially cause the code P1720 by disrupting the communication between the vehicle speed sensor and the engine control module.
5. What are some common repair tips for addressing the OBDII code P1720 in a Nissan?
- Repair tips may include repairing or replacing damaged wiring and connectors, replacing the vehicle speed sensor if faulty, and recalibrating or replacing the instrument cluster if needed.
6. Is it safe to continue driving with the OBDII code P1720 illuminated in my Nissan?
- It is generally not recommended to continue driving with the code P1720 present, as it can affect the accuracy of the speedometer readings and potentially lead to other issues with the vehicle's performance.
7. Can a DIY enthusiast fix the OBDII code P1720 in a Nissan?
- Depending on the root cause of the code, some DIY enthusiasts with automotive repair experience may be able to address the issue by following diagnostic procedures and making necessary repairs or replacements.
8. How important is it to address the OBDII code P1720 promptly in a Nissan?
- It is important to address the code promptly to ensure accurate speedometer readings and proper operation of the vehicle's systems that rely on speed sensor data.
9. Will resetting the OBDII code P1720 in a Nissan make it go away permanently?
- Simply resetting the code may temporarily clear the warning light, but the underlying issue causing the code will need to be diagnosed and repaired to prevent the code from reappearing.
10. Can extreme weather conditions affect the occurrence of OBDII code P1720 in a Nissan?
- Yes, extreme weather conditions can potentially impact the vehicle speed sensor and its circuit, leading to issues that trigger the code P1720 in a Nissan.
Discuss the causes and fixes for P1720 Nissan OBDII Code
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