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Engine-Codes – Infiniti – P1225 2005 Infiniti G35

P1225 2005 Infiniti G35 Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1225 code for a 2005 Infiniti G35 indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle position sensor, Wiring issues, Problem with the engine control module. 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 Infiniti G35 indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle position sensor, Wiring issues, Problem with the engine control module.
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 17, 2024
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Code P1225 2005 Infiniti G35 Description

The P1225 code for a 2005 Infiniti G35 indicates a Closed Throttle Position Learning Performance Problem. This code is related to the throttle position sensor and its ability to accurately determine the position of the throttle when it is fully closed. The throttle position sensor is a crucial component of the engine management system, as it helps regulate the air-fuel mixture and the overall performance of the engine.

OBDII Code P1225 2005 Infiniti G35 - Closed Throttle Position Learning Performance Problem
P1225 2005 Infiniti G35 Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1225 2005 Infiniti G35

  1. Faulty throttle position sensor
  2. Wiring issues
  3. Problem with the engine control module
  4. Vacuum leaks
  5. Dirty throttle body

Symptoms of P1225 2005 Infiniti G35

  1. Hesitation or stalling when accelerating
  2. Rough idling
  3. Poor fuel efficiency
  4. Difficulty starting
  5. Failed emissions test

How to Fix P1225 2005 Infiniti G35

  1. Begin by diagnosing the specific cause of the closed throttle position learning performance problem using a diagnostic scanner to read the code and pinpoint the issue.
  2. Inspect the throttle position sensor and wiring for any signs of damage or wear. Replace any faulty components as needed.
  3. Clean the throttle body to ensure proper airflow and functioning.
  4. Reset the closed throttle position learning process using a scan tool to recalibrate the throttle position sensor.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the engine is operating smoothly.

Cost to Fix P1225 2005 Infiniti G35

The typical repair costs for addressing a closed throttle position learning performance problem can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to check local rates for a more accurate estimate.

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 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1225 in a 2005 Infiniti G35?

The common symptoms of OBDII code P1225 in a 2005 Infiniti G35 include rough idling, stalling, poor acceleration, and the vehicle's engine may struggle to maintain a consistent idle speed.

2. What causes the Closed Throttle Position Learning Performance Problem in a 2005 Infiniti G35?

The Closed Throttle Position Learning Performance Problem in a 2005 Infiniti G35 is typically caused by issues with the throttle position sensor, throttle body, or wiring/connectivity problems.

3. How can I diagnose the cause of OBDII code P1225 in my 2005 Infiniti G35?

To diagnose the cause of OBDII code P1225 in a 2005 Infiniti G35, you can start by checking the throttle position sensor for proper operation, inspecting the throttle body for any signs of damage or buildup, and ensuring all wiring connections are secure and free of corrosion.

4. Can I drive my 2005 Infiniti G35 with OBDII code P1225?

It is not recommended to drive your 2005 Infiniti G35 with OBDII code P1225, as the issue can affect the vehicle's performance and may lead to further damage if left unresolved.

5. How do I repair the Closed Throttle Position Learning Performance Problem in my 2005 Infiniti G35?

To repair the Closed Throttle Position Learning Performance Problem in a 2005 Infiniti G35, you may need to replace the throttle position sensor, clean the throttle body, or repair any faulty wiring connections. It is advisable to consult a professional mechanic for a thorough diagnosis and repair.

6. Can a dirty throttle body cause OBDII code P1225 in a 2005 Infiniti G35?

Yes, a dirty throttle body can cause OBDII code P1225 in a 2005 Infiniti G35 as it can affect the throttle position sensor's readings and lead to performance issues.

7. What is the significance of the Closed Throttle Position Learning in a 2005 Infiniti G35?

The Closed Throttle Position Learning is a calibration process that helps the vehicle's engine control module (ECM) optimize idle speed and throttle response based on the throttle position sensor's input. A performance problem in this learning process can impact the vehicle's overall performance.

8. How long does it take to repair OBDII code P1225 in a 2005 Infiniti G35?

The repair time for OBDII code P1225 in a 2005 Infiniti G35 can vary depending on the exact cause of the issue. Simple fixes like cleaning the throttle body may take less than an hour, while more complex repairs involving sensor replacement or wiring repairs may take longer.

9. Can resetting the ECM clear OBDII code P1225 in a 2005 Infiniti G35?

Resetting the ECM may temporarily clear OBDII code P1225 in a 2005 Infiniti G35, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem to prevent future occurrences.

10. Is it safe to ignore OBDII code P1225 in a 2005 Infiniti G35?

Ignoring OBDII code P1225 in a 2005 Infiniti G35 is not recommended, as it can lead to decreased performance, poor fuel efficiency, and potential engine damage over time. It is best to address the issue promptly to ensure the vehicle operates smoothly.

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