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P1226 2007 Nissan Pathfinder Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1226 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle position sensor (TPS), Wiring or connection issues between TPS and ECM, Dirty throttle body. 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 2007 Nissan Pathfinder indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor (TPS), Wiring or connection issues between TPS and ECM, Dirty throttle body.
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 14, 2024
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Code P1226 2007 Nissan Pathfinder Description

The P1226 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder indicates a Closed Throttle Position Learning Performance Problem. This code is related to the throttle position sensor (TPS) and the vehicle's electronic control module (ECM). The TPS is responsible for monitoring the position of the throttle valve and sending this information to the ECM, which uses it to adjust fuel delivery and ignition timing. When the ECM detects that the closed throttle position learning is not within the expected range, it triggers the P1226 code.

OBDII Code P1226 2007 Nissan Pathfinder - Closed Throttle Position Learning Performance Problem
P1226 2007 Nissan Pathfinder Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1226 2007 Nissan Pathfinder

  1. Faulty throttle position sensor (TPS)
  2. Wiring or connection issues between TPS and ECM
  3. Dirty throttle body
  4. Malfunctioning ECM
  5. Environmental factors such as extreme temperatures affecting sensor performance

Symptoms of P1226 2007 Nissan Pathfinder

  1. Reduced fuel efficiency
  2. Hesitation or stumbling during acceleration
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Reduced engine performance

How to Fix P1226 2007 Nissan Pathfinder

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code and confirm the issue.
  2. Inspect the throttle position sensor (TPS) and its wiring for any signs of damage or wear. Replace the TPS if necessary.
  3. Clean the throttle body to remove any carbon buildup or debris that may be affecting its performance.
  4. Check the connections between the TPS and ECM to ensure they are secure and free of corrosion.
  5. Clear the trouble code from the ECM's memory and perform a closed throttle position relearn procedure to recalibrate the system.

Cost to Fix P1226 2007 Nissan Pathfinder

The typical repair costs for addressing a P1226 code on a 2007 Nissan Pathfinder can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P1226 2007 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.

Need more information about the P1226 2007 Nissan Pathfinder 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 P1226 2007 Nissan Pathfinder Code

1. What does OBDII code P1226 mean on a 2007 Nissan Pathfinder?

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

2. What are the common symptoms of P1226 on a 2007 Nissan Pathfinder?

Symptoms may include poor acceleration, rough idling, reduced fuel efficiency, and possibly the illumination of the check engine light.

3. What causes the P1226 code to appear?

Common causes include a dirty or malfunctioning throttle body, issues with the throttle position sensor, a damaged wiring harness, or a failed ECM (Engine Control Module).

4. Can a dirty throttle body trigger P1226?

Yes, a dirty or carbon-clogged throttle body can prevent proper throttle position learning, leading to this code.

5. How do you fix the P1226 error code on a Nissan Pathfinder?

Start by cleaning the throttle body, checking for damaged wiring or connections, and performing a throttle position relearn procedure. Replace faulty components if necessary.

6. What is the throttle position relearn procedure for the 2007 Nissan Pathfinder?

The relearn procedure involves turning the ignition on and off in a specific sequence and pressing the accelerator pedal as per the manufacturer’s guidelines. Consult the service manual for detailed steps.

7. Is it safe to drive with the P1226 code on a Nissan Pathfinder?

It’s generally not recommended, as the vehicle may experience reduced performance and potential safety issues. Address the problem promptly to avoid further complications.

8. How much does it cost to repair the P1226 code?

Repair costs vary depending on the root cause. Cleaning the throttle body is inexpensive, while replacing the throttle body or ECM can cost several hundred dollars.

9. Can a faulty throttle position sensor cause P1226?

Yes, a malfunctioning throttle position sensor can prevent the ECM from detecting the correct closed throttle position, triggering the code.

10. Will disconnecting the battery clear the P1226 code?

Disconnecting the battery may clear the code temporarily, but it won’t resolve the root cause. Proper diagnosis and repair are necessary to prevent the code from returning.

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