AutoCodes – Nissan – P1720 2011 Nissan Altima Sedan

P1720 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan 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.

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Code Popularity 3,252

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1720 2011 Nissan Altima Sedan Description

The Engine Control Module (ECM) receives two vehicle speed sensor signals via the Control Area Network (CAN) communication line. One is sent from Vehicle Dynamic Control (VDC) / Traction Control System (TCS) / Anti-Lock Brake System (ABS) control unit, and the other is from Transmission Control Module (TCM). ECM uses these two signals for engine control.

OBDII Code P1720 2011 Nissan Altima Sedan - Vehicle Speed Meter Circuit Malfunction - AutoCodes.com — P1720 2011 Nissan Altima Sedan Code - Vehicle Speed Meter Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1720 2011 Nissan Altima Sedan?

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 2011 Nissan Altima Sedan?

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 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan code?

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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.