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P0507 2005 Infiniti G35 Code - Idle Speed Control System RPM Higher Than Expected

Quick Answer

The P0507 diagnostic trouble code (DTC) for a 2005 Infiniti G35 indicates that the Idle Speed Control System RPM is higher than expected. Common causes include Faulty idle air control valve, Vacuum leaks in the intake system, Dirty or malfunctioning 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
P0507 2005 Infiniti G35 indicates Idle Speed Control System RPM Higher Than Expected.
Common causes
Common causes include Faulty idle air control valve, Vacuum leaks in the intake system, Dirty or malfunctioning 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 12, 2024
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Code P0507 2005 Infiniti G35 Description

The P0507 diagnostic trouble code (DTC) for a 2005 Infiniti G35 indicates that the Idle Speed Control System RPM is higher than expected. This means that the engine's idle speed is exceeding the predetermined limit set by the vehicle's engine control module (ECM). The idle speed control system is responsible for maintaining a consistent and stable idle speed when the vehicle is stationary. When the RPM is higher than expected, it can lead to various performance issues and potentially cause long-term damage if left unaddressed.

OBDII Code P0507 2005 Infiniti G35 - Idle Speed Control System RPM Higher Than Expected
P0507 2005 Infiniti G35 Code - Idle Speed Control System RPM Higher Than Expected

Common Causes of P0507 2005 Infiniti G35

  1. Faulty idle air control valve.
  2. Vacuum leaks in the intake system.
  3. Dirty or malfunctioning throttle body.
  4. Issues with engine sensors, such as the throttle position sensor or mass airflow sensor.
  5. ECM software or calibration issues.

Symptoms of P0507 2005 Infiniti G35

  1. High idle speed when the vehicle is stationary.
  2. Engine surging or fluctuating RPMs.
  3. Rough idling or vibrations when the vehicle is at a stop.
  4. Decreased fuel efficiency.
  5. Potential stalling when coming to a stop.

How to Fix P0507 2005 Infiniti G35

  1. Diagnose the issue using a scan tool to confirm the P0507 code and check for any other related codes.
  2. Inspect the idle air control valve, throttle body, and intake system for any signs of damage or malfunction.
  3. Clean or replace the idle air control valve and throttle body if necessary.
  4. Check for vacuum leaks and repair any damaged hoses or gaskets.
  5. Test the vehicle to ensure that the idle speed is within the specified range and reset the ECM if needed.

Cost to Fix P0507 2005 Infiniti G35

The typical repair costs for addressing a P0507 code on a 2005 Infiniti G35 can range from $100 to $500, depending on the specific cause of the issue and the required repairs. This estimate includes parts and labor, but actual costs may vary based on the location, labor rates, and any additional components that need to be replaced. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the individual circumstances of the vehicle.

What does this mean?

Tech Notes for P0507 2005 Infiniti G35

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 repair the problem.



P0507 Code Relearn Idle Air Volume Relearn Procedure









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When is the Code Detected?

The idle speed is more than the target idle speed by 200 rpm or more.

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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 P0507 2005 Infiniti G35 Code

1. What does the OBDII code P0507 mean on a 2005 Infiniti G35?

P0507 indicates that the engine's idle speed is higher than the manufacturer’s specifications, typically due to an issue with the Idle Air Control System.

2. What are the common symptoms of code P0507 in a 2005 Infiniti G35?

Symptoms include a high idle RPM, rough idling, potential stalling, poor fuel economy, and the Check Engine Light being illuminated.

3. What causes the P0507 code on a 2005 Infiniti G35?

Common causes include a dirty or faulty throttle body, vacuum leaks, a malfunctioning idle air control valve, PCV system issues, or problems with the intake manifold gasket.

4. Can a vacuum leak cause the P0507 code in my Infiniti G35?

Yes, a vacuum leak is a common cause of P0507 because it allows unmetered air into the system, causing the idle RPM to rise above the expected range.

5. How can I fix the P0507 code on my 2005 Infiniti G35?

Start by cleaning the throttle body, inspecting for vacuum leaks, checking the idle air control valve, and ensuring the PCV system is functioning correctly. Replace faulty components as needed.

6. Is it safe to drive with a P0507 code on my Infiniti G35?

While the car may still be drivable, a high idle speed can lead to poor fuel efficiency and potentially damage components over time. It’s best to address the issue promptly.

7. How do I clean the throttle body to fix the P0507 code on my Infiniti G35?

Disconnect the battery, remove the intake hose, and use throttle body cleaner and a soft cloth to gently clean carbon buildup from the throttle plate and housing.

8. Can a dirty mass airflow sensor (MAF) cause the P0507 code on a 2005 Infiniti G35?

Yes, a dirty or malfunctioning MAF sensor can cause incorrect air readings, potentially leading to high idle RPM and triggering the P0507 code.

9. Will resetting the ECU fix the P0507 code on my Infiniti G35?

Resetting the ECU might temporarily turn off the Check Engine Light, but it won’t resolve the underlying issue causing the high idle RPM.

10. How much does it cost to repair the P0507 code on a 2005 Infiniti G35?

The cost varies depending on the root cause, but cleaning the throttle body or replacing small parts like gaskets or hoses can cost $50–$200. More extensive repairs, such as replacing the idle air control valve, might cost $300–$500.

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