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P1720 2011 Nissan Altima Sedan Code - Vehicle Speed Meter Circuit Malfunction

Quick Answer

The P1720 diagnostic trouble code (DTC) for a 2011 Nissan Altima Sedan indicates a malfunction in the vehicle speed meter circuit. Common causes include Faulty vehicle speed sensor, Wiring issues or shorts in the vehicle speed meter circuit, Defective instrument cluster. 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 2011 Nissan Altima Sedan indicates Vehicle Speed Meter Circuit Malfunction.
Common causes
Common causes include Faulty vehicle speed sensor, Wiring issues or shorts in the vehicle speed meter circuit, Defective instrument cluster.
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 2011 Nissan Altima Sedan Description

The P1720 diagnostic trouble code (DTC) for a 2011 Nissan Altima Sedan indicates a malfunction in the vehicle speed meter circuit. This code is specifically related to the vehicle's speedometer, which is responsible for displaying the vehicle's speed to the driver. When this circuit malfunctions, it can lead to inaccurate speed readings or a complete failure of the speedometer display.

OBDII Code P1720 2011 Nissan Altima Sedan - Vehicle Speed Meter Circuit Malfunction
P1720 2011 Nissan Altima Sedan Code - Vehicle Speed Meter Circuit Malfunction

Common Causes of P1720 2011 Nissan Altima Sedan

  1. Faulty vehicle speed sensor
  2. Wiring issues or shorts in the vehicle speed meter circuit
  3. Defective instrument cluster
  4. Malfunctioning transmission control module
  5. Computer system malfunction

Symptoms of P1720 2011 Nissan Altima Sedan

  1. Inaccurate speed readings on the speedometer
  2. Speedometer needle fluctuating or sticking
  3. Check Engine Light illuminated
  4. Transmission shifting irregularly
  5. Vehicle going into limp mode

How to Fix P1720 2011 Nissan Altima Sedan

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspecting the vehicle speed sensor and wiring for any visible damage.
  2. Test the vehicle speed sensor using a multimeter to check for proper resistance and voltage output.
  3. Replace the faulty vehicle speed sensor if it is determined to be the cause of the issue.
  4. Check and repair any damaged wiring or connections in the vehicle speed meter circuit.
  5. Clear the DTC and test drive the vehicle to ensure the speedometer is functioning correctly.

Cost to Fix P1720 2011 Nissan Altima Sedan

The typical repair costs for addressing a P1720 code on a 2011 Nissan Altima Sedan can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check local rates for a more accurate estimate. Additionally, factors such as the vehicle's make and model, engine type, and location can also impact the overall repair costs.

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 2011 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P1720 in a 2011 Nissan Altima Sedan?

- Common symptoms include a malfunctioning speedometer, inaccurate speed readings, and potential issues with shifting gears.

2. What are the possible causes of the P1720 code in a 2011 Nissan Altima Sedan?

- Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors in the speedometer circuit, or a defective instrument cluster.

3. How can I diagnose the Vehicle Speed Meter Circuit Malfunction in my 2011 Nissan Altima Sedan?

- Diagnosis typically involves checking the vehicle speed sensor, inspecting the wiring and connectors for damage, and testing the instrument cluster for any faults.

4. Can a malfunctioning vehicle speed sensor cause the P1720 code in a 2011 Nissan Altima Sedan?

- Yes, a faulty vehicle speed sensor is a common cause of the P1720 code as it affects the accuracy of speed readings sent to the ECM.

5. Is it safe to drive my 2011 Nissan Altima Sedan with the P1720 code active?

- It is not recommended to drive with the P1720 code active as it can lead to inaccurate speed readings and potential issues with the vehicle's transmission.

6. How can I reset the P1720 code in my 2011 Nissan Altima Sedan?

- To reset the code, you can use an OBDII scanner to clear the code after addressing the underlying issue causing the Vehicle Speed Meter Circuit Malfunction.

7. Can I repair the Vehicle Speed Meter Circuit Malfunction in my 2011 Nissan Altima Sedan myself?

- Depending on your level of automotive expertise, you may be able to repair the issue yourself by replacing the faulty speed sensor, repairing damaged wiring, or addressing other potential causes.

8. Will the P1720 code cause my 2011 Nissan Altima Sedan to fail an emissions test?

- Yes, the P1720 code can cause your vehicle to fail an emissions test as it indicates a malfunction in the vehicle speed meter circuit.

9. How much does it typically cost to repair the Vehicle Speed Meter Circuit Malfunction in a 2011 Nissan Altima Sedan?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts and labor ranging from $100 to $500 or more.

10. Can the P1720 code in a 2011 Nissan Altima Sedan be intermittent?

- Yes, the P1720 code can be intermittent, meaning that the issue causing the Vehicle Speed Meter Circuit Malfunction may not be constantly present.

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