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P1226 2010 Nissan Pathfinder Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1226 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder refers to a "Closed Throttle Position Learning Performance Problem." This code indicates that there is an issue with the closed throttle position learning system in the vehicle. Common causes include Faulty throttle position sensor, Dirty or clogged throttle body, Wiring or electrical issues in the closed throttle position learning system. 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
P1226 2010 Nissan Pathfinder indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor, Dirty or clogged throttle body, Wiring or electrical issues in the closed throttle position learning system.
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 15, 2024
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Code P1226 2010 Nissan Pathfinder Description

The P1226 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder refers to a "Closed Throttle Position Learning Performance Problem." This code indicates that there is an issue with the closed throttle position learning system in the vehicle. The closed throttle position learning system is responsible for ensuring that the throttle body is properly calibrated and functioning correctly when the throttle is fully closed.

OBDII Code P1226 2010 Nissan Pathfinder - Closed Throttle Position Learning Performance Problem
P1226 2010 Nissan Pathfinder Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1226 2010 Nissan Pathfinder

  1. Faulty throttle position sensor
  2. Dirty or clogged throttle body
  3. Wiring or electrical issues in the closed throttle position learning system
  4. Vacuum leaks in the intake system
  5. Software or calibration issues in the engine control module (ECM)

Symptoms of P1226 2010 Nissan Pathfinder

  1. Engine stalling or hesitation when accelerating
  2. Reduced fuel efficiency
  3. Rough idling or irregular engine performance
  4. Check Engine Light illuminated on the dashboard

How to Fix P1226 2010 Nissan Pathfinder

  1. Begin by conducting a thorough inspection of the throttle body, throttle position sensor, and associated wiring for any signs of damage or wear.
  2. Clean the throttle body and throttle position sensor to ensure proper operation.
  3. Perform a reset of the closed throttle position learning system using a diagnostic scanner to recalibrate the throttle position.
  4. Check for any vacuum leaks in the intake system and repair as necessary.
  5. If the issue persists, consider replacing the throttle position sensor or addressing any wiring or ECM calibration issues.

Cost to Fix P1226 2010 Nissan Pathfinder

The typical repair costs for addressing a P1226 code on a 2010 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, the cost of parts such as a throttle position sensor or throttle body cleaning supplies can range from $50 to $200. Labor costs at an auto repair shop can range from $80 to $150 per hour, with the total repair bill likely falling between $150 and $500. It is advisable to consult with a qualified mechanic to get an accurate estimate based on the specific circumstances of your vehicle.

What does this mean?

Tech Notes for P1226 2010 Nissan Pathfinder

If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replace the Electric Throttle Control Actuator (Motor) to fix the problem.



Nissan Pathfinder Idle Air Volume Learning Procedure

When is the Code Detected?

Closed throttle position learning is not performed successfully, repeatedly.

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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 P1226 2010 Nissan Pathfinder Code

1. What does the OBDII code P1226 mean on a 2010 Nissan Pathfinder?

P1226 indicates a "Closed Throttle Position Learning Performance Problem," meaning the engine control module (ECM) is having trouble learning or detecting the proper throttle position when the throttle is closed.

2. What are the common symptoms of code P1226 on a 2010 Nissan Pathfinder?

Symptoms may include irregular idling, reduced engine performance, poor throttle response, and the check engine light turning on.

3. What causes the P1226 code in a 2010 Nissan Pathfinder?

Common causes include a dirty or faulty throttle body, a malfunctioning throttle position sensor, wiring issues, or a failed ECM.

4. Can a dirty throttle body trigger the P1226 code?

Yes, a dirty or carbon-clogged throttle body can prevent the ECM from accurately detecting the closed throttle position, triggering the code.

5. How can I fix the P1226 code on my 2010 Nissan Pathfinder?

Cleaning the throttle body, checking for damaged wiring or connectors, and performing a throttle position relearn procedure are common fixes. If the issue persists, the throttle position sensor or ECM may need replacement.

6. What is a throttle position relearn procedure, and why is it important for resolving P1226?

A throttle position relearn procedure allows the ECM to properly calibrate the closed throttle position. This is essential after cleaning the throttle body or replacing related components.

7. Can I drive my 2010 Nissan Pathfinder with the P1226 code?

Driving with the P1226 code is possible but not recommended, as it may lead to poor performance, reduced fuel efficiency, or further damage to the throttle system.

8. How much does it cost to repair the P1226 code on a 2010 Nissan Pathfinder?

Repair costs can vary, but cleaning the throttle body typically costs $100–$200, while replacing a throttle position sensor or ECM may cost $300–$1,000 depending on parts and labor.

9. Can a dead battery cause the P1226 code to appear?

A dead or weak battery can sometimes reset the ECM, requiring the throttle position relearn procedure to be performed, which may lead to the P1226 code if not completed.

10. What tools are needed to diagnose the P1226 code?

A diagnostic scanner, a multimeter for testing electrical connections, and basic tools for throttle body cleaning or sensor replacement are typically required.

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