P0507 2003 Infiniti G35 Code - Idle Speed Control System RPM Higher Than Expected
Quick Answer
The Engine Control Module (ECM) controls the engine idle speed to a specified level through the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. Common causes include Dirty throttle body, Electric throttle control actuator misadjusted or damaged, Faulty Electric throttle control actuator. 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 2003 Infiniti G35 indicates Idle Speed Control System RPM Higher Than Expected.
- Common causes
- Common causes include Dirty throttle body, Electric throttle control actuator misadjusted or damaged, Faulty Electric throttle control actuator.
- 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.
Code P0507 2003 Infiniti G35 Description
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily. The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warming up, deceleration, and engine load (air conditioner, power steering and cooling fan operation, etc.)
What are the Possible Causes of the DTC P0507 2003 Infiniti G35?
- Dirty throttle body
- Electric throttle control actuator misadjusted or damaged
- Faulty Electric throttle control actuator
- Intake air leak
- Poor electrical connection to the Intake Air Control (IAC) valve
How to Fix the DTC P0507 2003 Infiniti G35?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
P0507 Code Relearn Idle Air Volume Relearn Procedure
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0507 2003 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0507 2003 Infiniti G35 Code
1. What does the OBDII code P0507 mean on a 2003 Infiniti G35?
P0507 indicates that the Idle Speed Control System is maintaining an RPM higher than the manufacturer’s specified range.
2. What are the common symptoms of code P0507 on an Infiniti G35?
Symptoms include a high idle RPM, rough idling, potential stalling, and decreased fuel efficiency.
3. What causes the P0507 code on a 2003 Infiniti G35?
Common causes include vacuum leaks, a dirty or faulty throttle body, a malfunctioning idle air control valve (IACV), or issues with the PCV valve.
4. Can a vacuum leak trigger the P0507 code?
Yes, a vacuum leak can cause unmetered air to enter the engine, leading to a higher idle RPM and triggering the P0507 code.
5. How can I fix the P0507 code on my Infiniti G35?
Start by inspecting for vacuum leaks, cleaning the throttle body, and checking the idle air control valve for proper operation. Replace faulty components as needed.
6. Can a dirty throttle body cause the P0507 code?
Yes, a dirty throttle body can restrict airflow, causing the engine to compensate by increasing the idle speed, which may trigger the P0507 code.
7. Is it safe to drive with the P0507 code on my Infiniti G35?
While the car may still be drivable, ignoring this issue can lead to poor performance, increased fuel consumption, or potential engine damage over time.
8. How do I check for vacuum leaks causing the P0507 code?
Inspect vacuum hoses for cracks, loose connections, or damage, and listen for hissing sounds around the intake manifold and hoses.
9. Do I need to reprogram the ECU after fixing the P0507 issue?
In some cases, resetting the ECU or performing an idle relearn procedure may be necessary to resolve the P0507 code completely.
10. Can a faulty mass airflow sensor (MAF) cause the P0507 code?
While less common, a malfunctioning MAF sensor could potentially affect the air-fuel mixture and indirectly cause high idle RPM, leading to the P0507 code.
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