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P1225 2003 Infiniti G35 Code - Closed Throttle Position Learning Performance Problem

Quick Answer

The P1225 code on a 2003 Infiniti G35 indicates a Closed Throttle Position Learning Performance Problem. Common causes include Faulty throttle body, Damaged wiring or connectors in the closed throttle position learning system, Malfunctioning electronic control module (ECM). 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 2003 Infiniti G35 indicates Closed Throttle Position Learning Performance Problem.
Common causes
Common causes include Faulty throttle body, Damaged wiring or connectors in the closed throttle position learning system, Malfunctioning electronic control module (ECM).
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 2003 Infiniti G35 Description

The P1225 code on a 2003 Infiniti G35 indicates a Closed Throttle Position Learning Performance Problem. This code is related to the throttle body of the vehicle and specifically refers to the closed throttle position learning system. The closed throttle position learning system is responsible for ensuring that the throttle body is functioning properly and accurately adjusting the throttle position when the accelerator pedal is released.

OBDII Code P1225 2003 Infiniti G35 - Closed Throttle Position Learning Performance Problem
P1225 2003 Infiniti G35 Code - Closed Throttle Position Learning Performance Problem

Common Causes of P1225 2003 Infiniti G35

  1. Faulty throttle body
  2. Damaged wiring or connectors in the closed throttle position learning system
  3. Malfunctioning electronic control module (ECM)
  4. Carbon buildup in the throttle body
  5. Vacuum leaks in the intake system

Symptoms of P1225 2003 Infiniti G35

  1. Rough idling or unstable idle
  2. Poor acceleration or lack of response when pressing the accelerator pedal
  3. Stalling or difficulty starting the vehicle
  4. Decreased fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P1225 2003 Infiniti G35

  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 body for any signs of damage or carbon buildup. Clean the throttle body if necessary.
  3. Check the wiring and connectors in the closed throttle position learning system for any breaks or corrosion. Repair or replace as needed.
  4. Test the electronic control module (ECM) for proper functioning and replace if faulty.
  5. Clear the trouble code from the vehicle's computer and perform a throttle body relearn procedure to recalibrate the closed throttle position learning system.

Cost to Fix P1225 2003 Infiniti G35

The typical repair costs for addressing a P1225 code on a 2003 Infiniti G35 can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it is recommended to consult with local auto repair shops.

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 2003 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1225 in a 2003 Infiniti G35?

- Common symptoms include rough idling, stalling, poor acceleration, and the Check Engine light illuminating.

2. What does the OBDII code P1225 in a 2003 Infiniti G35 indicate?

- This code indicates a Closed Throttle Position Learning Performance Problem in the vehicle's electronic control system.

3. What are the possible causes of OBDII code P1225 in a 2003 Infiniti G35?

- Potential causes may include a faulty throttle position sensor, issues with the throttle body, vacuum leaks, or a malfunctioning ECM.

4. How can I diagnose the Closed Throttle Position Learning Performance Problem in my 2003 Infiniti G35?

- Diagnosing the issue may involve checking the throttle position sensor's readings, inspecting the throttle body for dirt or carbon buildup, and scanning for other related trouble codes.

5. What are some repair tips for addressing OBDII code P1225 in a 2003 Infiniti G35?

- Repair tips may include cleaning the throttle body, replacing the throttle position sensor, checking for vacuum leaks, and resetting the Closed Throttle Position Learning.

6. Can OBDII code P1225 in a 2003 Infiniti G35 cause further damage if left unresolved?

- Ignoring this code can lead to poor engine performance, decreased fuel efficiency, and potential damage to other engine components over time.

7. Is it safe to continue driving my 2003 Infiniti G35 with OBDII code P1225 present?

- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent further complications and ensure optimal performance.

8. Will resetting the OBDII code P1225 in my 2003 Infiniti G35 make it go away permanently?

- Simply resetting the code may temporarily clear the Check Engine light, but the underlying issue causing the code will likely persist until properly diagnosed and repaired.

9. How long does it typically take to repair the Closed Throttle Position Learning Performance Problem in a 2003 Infiniti G35?

- The repair time can vary based on the exact cause of the issue, but it may take anywhere from a few hours to a full day depending on the complexity of the repair needed.

10. Should I attempt to fix OBDII code P1225 in my 2003 Infiniti G35 myself, or should I seek professional help?

- While some DIY enthusiasts may be able to address simpler causes like cleaning the throttle body, complex issues or component replacements are best handled by a qualified mechanic specializing in Infiniti vehicles.

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