AutoCodes – Ford – P1506 2010 Ford Fusion

P1506 2010 Ford Fusion Code - Idle Air Control Overspeed 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 harness is open or shorted, IAC valve circuit poor electrical connection. 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: P1506 2010 Ford Fusion indicates Idle Air Control Overspeed Error.
Common causes: Common causes include Faulty Idle Air Control (IAC) valve, IAC valve harness is open or shorted, IAC valve circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,373

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1506 2010 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 P1506 2010 Ford Fusion - Idle Air Control Overspeed Error - AutoCodes.com — P1506 2010 Ford Fusion Code - Idle Air Control Overspeed Error

What does this mean?

What are the Possible Causes of the DTC P1506 2010 Ford Fusion?

Faulty Idle Air Control (IAC) valve
IAC valve harness is open or shorted
IAC valve circuit poor electrical connection
Intake leaks
Stuck PCV Valve

How to Fix the DTC P1506 2010 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 P1506 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.
Also, check for intake leaks or stuck PCV Valve.
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 P1506 2010 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.

Need more information about the P1506 2010 Ford Fusion code?

Need more information on how to fix the P1506 2010 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1506 2010 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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 P1506 2010 Ford Fusion Code

1. What are the common symptoms of OBDII code P1506 in a 2010 Ford Fusion?

Symptoms may include a fluctuating or high idle speed, stalling at idle, rough idle, and potential engine hesitation.

2. What does the OBDII code P1506 in a 2010 Ford Fusion indicate?

P1506 indicates an Idle Air Control Overspeed Error, suggesting an issue with the idle air control system regulating engine idle speed.

3. What are the possible causes of OBDII code P1506 in a 2010 Ford Fusion?

Common causes include a faulty idle air control valve, vacuum leaks, dirty throttle body, or issues with the engine's air intake system.

4. How can I diagnose the cause of OBDII code P1506 in my 2010 Ford Fusion?

Diagnosis typically involves inspecting the idle air control valve, checking for vacuum leaks, cleaning the throttle body, and ensuring proper functioning of the air intake components.

5. Can a dirty throttle body cause OBDII code P1506 in a 2010 Ford Fusion?

Yes, a dirty throttle body can disrupt the airflow and cause the idle air control system to malfunction, triggering code P1506.

6. Is it safe to continue driving with OBDII code P1506 in a 2010 Ford Fusion?

While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential stalling or other driveability problems.

7. How can I repair OBDII code P1506 in my 2010 Ford Fusion?

Repair may involve cleaning or replacing the idle air control valve, fixing vacuum leaks, cleaning the throttle body, or addressing any other underlying issues causing the code.

8. Can a DIY enthusiast fix OBDII code P1506 in a 2010 Ford Fusion?

Depending on the skill level, DIY enthusiasts may be able to address simpler causes like cleaning the throttle body or replacing the idle air control valve. More complex issues may require professional assistance.

9. Will resetting the OBDII code P1506 in a 2010 Ford Fusion make it go away permanently?

Simply resetting the code may temporarily clear the warning, but if the underlying issue is not fixed, the code is likely to reappear after driving cycles.

10. How can I prevent OBDII code P1506 from recurring in my 2010 Ford Fusion?

Regular maintenance, such as cleaning the throttle body, inspecting for vacuum leaks, and ensuring the idle air control system is functioning correctly, can help prevent the code from reoccurring.