AutoCodes – Infiniti – P1726 Infiniti

P1726 Infiniti Code - Electric Throttle Control System

Quick Answer

Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor etc. Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body 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: P1726 Infiniti indicates Electric Throttle Control System.
Common causes: Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body 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 2,258

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

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

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1726 Infiniti Description

Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor etc. The actuator sends a signal to the Engine Control Module (ECM), and ECM sends the signal to Transmission Control Module (TCM) with CAN communication.

OBDII Code P1726 Infiniti - Electric Throttle Control System - AutoCodes.com — P1726 Infiniti Code - Electric Throttle Control System

What does this mean?

What are the Possible Causes of the DTC P1726 Infiniti?

Faulty Throttle Body
Throttle Body harness is open or shorted
Throttle Body circuit poor electrical connection

How to Fix the DTC P1726 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 does this mean?

Code Tech Notes

If the P1726 is displayed with other codes regarding Engine Control Module (ECM), perform the trouble diagnosis for other codes displayed first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1726 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 P1726 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 P1726 Infiniti Code

1. What does the OBDII code P1726 mean on an Infiniti?

P1726 indicates an issue with the Electric Throttle Control (ETC) system, which controls engine throttle electronically without a mechanical cable.

2. What are the common symptoms of code P1726 in an Infiniti?

Symptoms may include reduced engine power, hesitation during acceleration, the throttle not responding properly, and the check engine light turning on.

3. What causes the P1726 code to appear on an Infiniti?

Common causes include a malfunctioning throttle body, faulty throttle position sensor (TPS), wiring or connector issues in the ETC system, or problems with the engine control module (ECM).

4. Can a dirty throttle body trigger the P1726 code?

Yes, a dirty or clogged throttle body can disrupt airflow and cause the ETC system to malfunction, potentially triggering the P1726 code.

5. How can you diagnose the P1726 code on an Infiniti?

A technician will use a scan tool to read live data, inspect the throttle body and wiring, test the throttle position sensor, and check for any additional related codes.

6. Can I drive my Infiniti with the P1726 code?

Driving with this code is not recommended as it can lead to reduced performance and potential safety concerns due to inconsistent throttle response.

7. How do you fix the P1726 code on an Infiniti?

Common fixes include cleaning or replacing the throttle body, repairing damaged wiring or connectors, or replacing a faulty throttle position sensor.

8. Does the P1726 code require throttle body replacement?

Not always. The issue could be resolved by cleaning the throttle body or addressing wiring issues, but replacement may be necessary if the throttle body is damaged.

9. How much does it cost to repair the P1726 code on an Infiniti?

Repair costs vary but can range from $150 to $500 depending on whether cleaning, repairs, or part replacements (e.g., throttle body or TPS) are needed.

10. Can a failing ECM cause the P1726 code in an Infiniti?

Yes, although rare, a malfunctioning ECM can fail to properly control the ETC system, leading to the P1726 code.