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P1720 2012 Nissan Altima Sedan Code - Vehicle Speed Meter Circuit Malfunction

Quick Answer

The P1720 diagnostic trouble code (DTC) for a 2012 Nissan Altima Sedan indicates a malfunction in the vehicle speed meter circuit. Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors in the speed meter circuit, ECM malfunction. 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 2012 Nissan Altima Sedan indicates Vehicle Speed Meter Circuit Malfunction.
Common causes
Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors in the speed meter circuit, ECM malfunction.
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 17, 2024
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Code P1720 2012 Nissan Altima Sedan Description

The P1720 diagnostic trouble code (DTC) for a 2012 Nissan Altima Sedan indicates a malfunction in the vehicle speed meter circuit. This code is specifically related to the vehicle speed sensor, which is responsible for monitoring the speed of the vehicle and sending this information to the engine control module (ECM) for various functions such as fuel injection timing, transmission shifting, and cruise control operation.

OBDII Code P1720 2012 Nissan Altima Sedan - Vehicle Speed Meter Circuit Malfunction
P1720 2012 Nissan Altima Sedan Code - Vehicle Speed Meter Circuit Malfunction

Common Causes of P1720 2012 Nissan Altima Sedan

  1. Faulty vehicle speed sensor
  2. Damaged wiring or connectors in the speed meter circuit
  3. ECM malfunction
  4. Poor electrical connection
  5. Mechanical issues with the speed sensor gear or tone ring

Symptoms of P1720 2012 Nissan Altima Sedan

  1. Inaccurate speedometer readings or fluctuations
  2. Cruise control not working properly
  3. Harsh or delayed shifting from the transmission
  4. Check Engine Light illuminated
  5. Loss of fuel efficiency

How to Fix P1720 2012 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a scan tool to retrieve the specific trouble code and pinpoint the source of the problem.
  2. Inspect the vehicle speed sensor, wiring, and connectors for any signs of damage or corrosion. Replace any faulty components.
  3. Test the vehicle speed sensor using a multimeter to ensure it is functioning correctly.
  4. Check the ECM for any stored codes or issues related to the vehicle speed meter circuit. Reset or replace the ECM if necessary.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1720 2012 Nissan Altima Sedan

The typical repair costs for addressing a P1720 code on a 2012 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, and engine type. It's recommended to contact local shops for accurate pricing information.

When is the Code Detected?

Malfunction is detected when ECM detects a difference between two vehicle speed sensor signals is out of the specified range.

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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 P1720 2012 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1720 in a 2012 Nissan Altima Sedan?

The common symptoms of OBDII code P1720, which signifies a Vehicle Speed Meter Circuit Malfunction, may include issues with the speedometer, erratic speedometer readings, and potential problems with the vehicle's transmission shifting.

2. What are the possible causes of OBDII code P1720 in a 2012 Nissan Altima Sedan?

Possible causes of OBDII code P1720 include faulty vehicle speed sensor, damaged wiring or connectors in the vehicle speed meter circuit, or a malfunctioning instrument cluster.

3. How can I diagnose OBDII code P1720 in my 2012 Nissan Altima Sedan?

Diagnosing OBDII code P1720 may involve using a diagnostic scanner to retrieve the trouble codes, checking the vehicle speed sensor for proper operation, inspecting the wiring and connectors for any damage, and testing the instrument cluster for functionality.

4. Can I continue driving my 2012 Nissan Altima Sedan with OBDII code P1720?

It is not recommended to continue driving your vehicle with OBDII code P1720, as it can lead to inaccurate speedometer readings and potential transmission issues. It is advisable to address the problem promptly to ensure safe driving.

5. How can I repair OBDII code P1720 in my 2012 Nissan Altima Sedan?

Repairing OBDII code P1720 may involve replacing the faulty vehicle speed sensor, repairing or replacing damaged wiring or connectors in the speed meter circuit, or addressing any issues with the instrument cluster.

6. Is it possible to reset OBDII code P1720 in a 2012 Nissan Altima Sedan?

Resetting OBDII code P1720 without addressing the underlying issue will not resolve the problem. It is important to diagnose and repair the root cause of the code to prevent it from recurring.

7. Can a DIY enthusiast fix OBDII code P1720 in a 2012 Nissan Altima Sedan?

Depending on the DIY enthusiast's skills and experience, it may be possible to address OBDII code P1720 by following a repair manual or online guides. However, complex electrical issues may require professional assistance.

8. How much does it cost to repair OBDII code P1720 in a 2012 Nissan Altima Sedan?

The cost of repairing OBDII code P1720 can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is recommended to obtain quotes from reputable auto repair shops for an accurate estimate.

9. Will OBDII code P1720 cause my 2012 Nissan Altima Sedan to fail an emissions test?

OBDII code P1720 may cause your vehicle to fail an emissions test, as it indicates a malfunction in the vehicle speed meter circuit. It is advisable to address the issue before undergoing an emissions test.

10. How long does it typically take to repair OBDII code P1720 in a 2012 Nissan Altima Sedan?

The repair time for OBDII code P1720 can vary depending on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved repairs may require a day or more.

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