AutoCodes – Infiniti – P1722 Infiniti

P1722 Infiniti Code - Estimated Vehicle Speed Signal

Quick Answer

The vehicle speed signal is transmitted from the Anti-Lock Brake System (ABS) actuator and electric unit (control unit) to Transmission Control Module (TCM) via Control Area Network (CAN) communication line. Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness is open or shorted, Vehicle speed sensor circuit poor electrical connection. 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: P1722 Infiniti indicates Estimated Vehicle Speed Signal.
Common causes: Common causes include Faulty Vehicle Speed Sensor, Vehicle speed sensor harness is open or shorted, Vehicle speed sensor circuit poor electrical connection.
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 2,376

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 Jul 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1722 Infiniti Description

The vehicle speed signal is transmitted from the Anti-Lock Brake System (ABS) actuator and electric unit (control unit) to Transmission Control Module (TCM) via Control Area Network (CAN) communication line. The Diagnostic Trouble Code (DTC) will set when there is a big difference between the vehicle speed signal from the ABS actuator and the electric unit (control unit), and the vehicle speed sensor signal.

OBDII Code P1722 Infiniti - Estimated Vehicle Speed Signal - AutoCodes.com — P1722 Infiniti Code - Estimated Vehicle Speed Signal

What does this mean?

What are the Possible Causes of the DTC P1722 Infiniti?

Faulty Vehicle Speed Sensor
Vehicle speed sensor harness is open or shorted
Vehicle speed sensor circuit poor electrical connection

How to Fix the DTC P1722 Infiniti?

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 P1722 Infiniti 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 P1722 Infiniti 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 P1722 Infiniti Code

1. What does the OBDII code P1722 mean for an Infiniti?

P1722 indicates an issue with the Estimated Vehicle Speed Signal, which is used by the transmission control system to monitor and manage vehicle speed.

2. What are the common symptoms of the P1722 code in an Infiniti?

Symptoms may include erratic shifting, reduced fuel efficiency, illuminated check engine light, or the transmission going into limp mode.

3. What causes the P1722 code to appear on an Infiniti?

Common causes include a faulty vehicle speed sensor, damaged wiring or connectors, a malfunctioning transmission control module (TCM), or issues within the transmission itself.

4. Can driving with the P1722 code damage my Infiniti?

Yes, driving with this code may cause further damage to the transmission or lead to unsafe driving conditions due to erratic shifting.

5. How is the P1722 code diagnosed in an Infiniti?

A mechanic will typically use a scan tool to confirm the code, inspect the vehicle speed sensor and related wiring, and test the TCM for proper functionality.

6. How do you fix the P1722 code on an Infiniti?

The fix may involve replacing the vehicle speed sensor, repairing damaged wiring or connectors, reprogramming or replacing the transmission control module, or servicing the transmission.

7. How much does it cost to repair the P1722 code on an Infiniti?

The cost varies depending on the root cause but can range from $150 to $400 for sensor replacement and wiring repairs, while TCM replacement may cost significantly more.

8. What tools are required to fix the P1722 code in an Infiniti?

Essential tools include an OBDII scanner, a multimeter for testing electrical components, and potentially specialty tools for accessing and replacing the vehicle speed sensor.

9. Can a P1722 code be triggered by low transmission fluid?

Yes, low or dirty transmission fluid can cause the transmission to malfunction, potentially triggering the P1722 code.

10. Is it safe to clear the P1722 code without fixing the issue?

Clearing the code without addressing the root cause may temporarily hide the problem, but it can lead to further transmission issues and unsafe driving conditions.