AutoCodes – Ford – P1507 2009 Ford Fusion

P1507 2009 Ford Fusion Code - Idle Air Control Under Speed Error

Quick Answer

The Idle Air Control Valve (IACV) valve assembly controls the engine idle speed and provides a dashpot function. Common causes include Faulty Idle Air Control (IAC) valve, IAC valve stuck closed, IAC valve harness is open or shorted. 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: P1507 2009 Ford Fusion indicates Idle Air Control Under Speed Error.
Common causes: Common causes include Faulty Idle Air Control (IAC) valve, IAC valve stuck closed, IAC valve harness is open or shorted.
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.

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Code Popularity 3,157

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 25, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1507 2009 Ford Fusion Description

The Idle Air Control Valve (IACV) valve assembly controls the engine idle speed and provides a dashpot function. The IAC valve assembly meters intake air around the throttle plate through a bypass within the IAC valve assembly and throttle body. The Powertrain Control Module (PCM) determines the desired idle speed or bypass air and signals the IAC valve assembly through a specified duty cycle. The IAC valve responds by positioning the IAC valve to control the amount of bypassed air. The PCM monitors engine RPM and increases or decreases the IAC duty cycle in order to achieve the desired RPM.

OBDII Code P1507 2009 Ford Fusion - Idle Air Control Under Speed Error - AutoCodes.com — P1507 2009 Ford Fusion Code - Idle Air Control Under Speed Error

What does this mean?

What are the Possible Causes of the DTC P1507 2009 Ford Fusion?

Faulty Idle Air Control (IAC) valve
IAC valve stuck closed
IAC valve harness is open or shorted
IAC valve circuit poor electrical connection

How to Fix the DTC P1507 2009 Ford Fusion?

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.

What does this mean?

Code Tech Notes

The P1507 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned.
If the problem persistss, the IAC valve may need to be replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1507 2009 Ford Fusion 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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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 P1507 2009 Ford Fusion Code

1. What does OBDII code P1507 on a 2009 Ford Fusion indicate?

The P1507 code specifically refers to the "Idle Air Control Under Speed Error" on a 2009 Ford Fusion, signaling an issue with the idle air control system.

2. What are some common symptoms of OBDII code P1507 on a 2009 Ford Fusion?

Common symptoms include rough idling, stalling at low speeds, fluctuating RPMs, and potential engine misfires.

3. What are possible causes of OBDII code P1507 on a 2009 Ford Fusion?

Potential causes can include a malfunctioning idle air control valve (IAC), a vacuum leak, dirty throttle body, or issues with the engine's computer system.

4. How can I diagnose the source of OBDII code P1507 on a 2009 Ford Fusion?

Diagnosis typically involves checking the idle air control valve for proper operation, inspecting vacuum lines for leaks, cleaning the throttle body, and scanning the vehicle's computer for any related fault codes.

5. Can I continue driving my 2009 Ford Fusion with OBDII code P1507?

It is not recommended to drive with the P1507 code present, as it can lead to potential engine performance issues and even stalling while driving.

6. How can I repair OBDII code P1507 on a 2009 Ford Fusion?

Repair methods may involve replacing the idle air control valve, fixing any vacuum leaks, cleaning the throttle body, and resetting the engine's computer system.

7. Is it possible to clear OBDII code P1507 on a 2009 Ford Fusion without repairing the issue?

While clearing the code may temporarily turn off the check engine light, it is crucial to address the underlying problem to prevent further issues with the idle air control system.

8. How much does it typically cost to fix OBDII code P1507 on a 2009 Ford Fusion?

The cost of repairs can vary depending on the specific cause of the issue, but it may range from a simple DIY fix to more extensive repairs at a mechanic, potentially costing a few hundred dollars.

9. Can a DIY enthusiast repair OBDII code P1507 on a 2009 Ford Fusion?

Some basic repairs like cleaning the throttle body or checking for vacuum leaks can be done by a DIY enthusiast, but more complex issues may require professional assistance.

10. Will OBDII code P1507 on a 2009 Ford Fusion affect fuel efficiency?

Yes, unresolved issues related to the idle air control system can impact fuel efficiency by causing the engine to run inefficiently and potentially waste fuel.