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Engine-Codes – Nissan – P1225 2005 Nissan Maxima

P1225 2005 Nissan Maxima Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1225 code for a 2005 Nissan Maxima specifically indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle position sensor (TPS), Dirty or clogged throttle body, Wiring or electrical issues related to the TPS. 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
P1225 2005 Nissan Maxima indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor (TPS), Dirty or clogged throttle body, Wiring or electrical issues related to the TPS.
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 12, 2024
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Code P1225 2005 Nissan Maxima Description

The P1225 code for a 2005 Nissan Maxima specifically indicates a Closed Throttle Position Learning Performance Problem. In simpler terms, this means that the engine control module (ECM) is having difficulty learning the position of the throttle when it is fully closed. This can lead to issues with the engine's performance and overall drivability of the vehicle.

OBDII Code P1225 2005 Nissan Maxima - Closed Throttle Position Learning Performance Problem
P1225 2005 Nissan Maxima Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1225 2005 Nissan Maxima

  1. Faulty throttle position sensor (TPS)
  2. Dirty or clogged throttle body
  3. Wiring or electrical issues related to the TPS
  4. ECM software or calibration issues
  5. Vacuum leaks in the intake system

Symptoms of P1225 2005 Nissan Maxima

  1. Rough idle or unstable idle speed
  2. Hesitation or lack of response when accelerating
  3. Reduced fuel efficiency
  4. Engine stalling or difficulty starting
  5. Illumination of the Check Engine Light

How to Fix P1225 2005 Nissan Maxima

  1. Begin by diagnosing the issue using a diagnostic scanner to read the code and determine the exact cause of the problem.
  2. Inspect the throttle position sensor (TPS) and its wiring for any signs of damage or malfunction. Replace the TPS if necessary.
  3. Clean the throttle body thoroughly to remove any carbon buildup or debris that may be affecting its ability to close properly.
  4. Reset the ECM's throttle position learning by following the manufacturer's recommended procedure to ensure accurate calibration.
  5. Test drive the vehicle to verify that the issue has been resolved and that the throttle position is now being learned correctly by the ECM.

Cost to Fix P1225 2005 Nissan Maxima

The cost of repairing a P1225 code on a 2005 Nissan Maxima can vary depending on the specific cause of the issue. On average, the cost of parts such as a new throttle position sensor (TPS) can range from $50 to $150, while labor costs can range from $100 to $300. This puts the total repair cost between $150 and $450, excluding any additional diagnostic fees or taxes.

What does this mean?

Tech Notes for P1225 2005 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 value is excessively low.

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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 P1225 2005 Nissan Maxima Code

1. What does the OBDII code P1225 mean on a 2005 Nissan Maxima?

P1225 indicates a "Closed Throttle Position Learning Performance Problem," meaning the engine control module (ECM) is having trouble learning or recognizing the proper throttle position when the throttle is closed.

2. What are common symptoms of the P1225 code on a 2005 Nissan Maxima?

Symptoms may include poor acceleration, rough idling, engine stalling, reduced fuel efficiency, or the check engine light being illuminated.

3. What causes the P1225 code on a Nissan Maxima?

Common causes include a dirty or faulty throttle body, a malfunctioning throttle position sensor (TPS), damaged wiring or connectors, or a software issue in the ECM.

4. Can a dirty throttle body trigger the P1225 code?

Yes, a dirty throttle body can prevent the ECM from accurately detecting the closed throttle position, leading to the P1225 code.

5. How can I fix the P1225 code on my 2005 Nissan Maxima?

Start by cleaning the throttle body, inspecting the throttle position sensor and wiring for damage, and performing a throttle position relearn procedure. If the issue persists, check the ECM for faults.

6. What is the throttle position relearn procedure for a 2005 Nissan Maxima?

The relearn procedure involves turning the ignition key to specific positions and waiting for a set amount of time. Consult the vehicle service manual for the exact steps, or have a professional perform it with diagnostic equipment.

7. Can a faulty throttle position sensor cause the P1225 code?

Yes, a malfunctioning throttle position sensor can send incorrect signals to the ECM, leading to a failure in throttle position learning.

8. Is it safe to drive with the P1225 code on a 2005 Nissan Maxima?

Driving with the P1225 code may be possible but not recommended, as it can lead to engine performance issues and potential stalling, which could be unsafe.

9. How much does it cost to repair the P1225 code on a 2005 Nissan Maxima?

Repair costs vary depending on the issue. Cleaning the throttle body may cost $100-$200, while sensor replacement or wiring repairs can range from $200-$500. ECM issues may be more expensive.

10. Can resetting the ECM clear the P1225 code on a 2005 Nissan Maxima?

Resetting the ECM may temporarily clear the code, but the issue will likely return if the underlying problem is not resolved. Proper diagnosis and repair are necessary.

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