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Engine-Codes – Nissan – P1226 2004 Nissan Maxima

P1226 2004 Nissan Maxima Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1226 code on a 2004 Nissan Maxima indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle position sensor, Dirty or malfunctioning throttle body, Wiring or connection issues. 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 2004 Nissan Maxima indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor, Dirty or malfunctioning throttle body, Wiring or connection issues.
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 2004 Nissan Maxima Description

The P1226 code on a 2004 Nissan Maxima indicates a Closed Throttle Position Learning Performance Problem. This means that the vehicle's Engine Control Module (ECM) is having difficulty learning the closed throttle position, which is crucial for proper engine performance. The closed throttle position refers to the position of the throttle plate when the accelerator pedal is not being pressed. The ECM uses this information to adjust fuel and air mixture, idle speed, and other parameters to ensure smooth operation.

OBDII Code P1226 2004 Nissan Maxima - Closed Throttle Position Learning Performance Problem
P1226 2004 Nissan Maxima Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1226 2004 Nissan Maxima

  1. Faulty throttle position sensor
  2. Dirty or malfunctioning throttle body
  3. Wiring or connection issues
  4. ECM software malfunction
  5. Vacuum leaks

Symptoms of P1226 2004 Nissan Maxima

  1. Rough idle or stalling
  2. Sluggish acceleration
  3. Reduced fuel efficiency
  4. Engine going into limp mode
  5. Check Engine Light illuminated

How to Fix P1226 2004 Nissan Maxima

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the trouble codes and confirm the P1226 code.
  2. Inspect the throttle position sensor and throttle body for any signs of damage or dirt buildup. Clean or replace these components as needed.
  3. Check the wiring and connections related to the throttle position sensor for any breaks, corrosion, or loose connections. Repair or replace as necessary.
  4. Perform a throttle body relearn procedure using a scan tool to reset the closed throttle position learning.
  5. Clear the trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1226 2004 Nissan Maxima

The cost of repairing a P1226 code on a 2004 Nissan Maxima can vary depending on the specific cause of the issue. In general, the cost of parts such as a new throttle position sensor or throttle body can range from $100 to $300. Labor costs at an auto repair shop can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. Overall, the total cost for addressing this issue could range from $200 to $500. It's recommended to consult with a qualified mechanic or repair shop for a more accurate estimate based on the specific diagnosis and repair needed.

What does this mean?

Tech Notes for P1226 2004 Nissan Maxima

You can try to clean the throttle body first before replacing anything. After clean or replacing the throttle body you will have to do an Idle Air Relearn and Throttle Valve Closed Position Learning



Idle Air Relearn



Throttle Valve Closed Position Learning

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 2004 Nissan Maxima Code

1. What does the OBDII code P1226 mean for a 2004 Nissan Maxima?

P1226 indicates a "Closed Throttle Position Learning Performance Problem," meaning the throttle body is not properly learning or retaining its closed position setting.

2. What are common symptoms of the P1226 code on a 2004 Nissan Maxima?

Symptoms may include rough idling, reduced throttle response, stalling, and the check engine light turning on.

3. What causes the P1226 code to occur?

Common causes include a dirty or faulty throttle body, issues with the throttle position sensor (TPS), wiring or connector problems, or a failed throttle control actuator.

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

Yes, a dirty throttle body can prevent the system from accurately learning the closed throttle position, triggering the P1226 code.

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

Cleaning the throttle body, ensuring proper connections, and performing a throttle position relearn procedure can often resolve the issue. If the problem persists, replacement of the throttle body or TPS may be necessary.

6. Do I need special tools to resolve the P1226 code?

You may need a scan tool capable of performing a throttle position relearn procedure and basic tools for cleaning or inspecting the throttle body.

7. What is a throttle position relearn procedure?

The throttle position relearn procedure resets the throttle body’s memory so it can properly learn the closed and open throttle positions. This can often be done with a scan tool or by following a specific manual process.

8. Can I drive my car with the P1226 code?

Driving with the P1226 code is possible but not recommended, as it can lead to poor engine performance, stalling, or reduced fuel efficiency.

9. Is the throttle position sensor the same as the throttle body?

No, the throttle position sensor (TPS) is a component of the throttle body that monitors its position. A malfunctioning TPS can lead to the P1226 code.

10. How much does it cost to repair the P1226 code on a 2004 Nissan Maxima?

The cost depends on the cause. Cleaning the throttle body may cost $50–$100, while replacing the throttle body or TPS can range from $300 to $800, including labor.

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