AutoCodes – Ford – P1506 2012 Ford Fusion

P1506 2012 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 2012 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.

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Code Popularity 4,012

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 P1506 2012 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 2012 Ford Fusion - Idle Air Control Overspeed Error - AutoCodes.com — P1506 2012 Ford Fusion Code - Idle Air Control Overspeed Error

What does this mean?

What are the Possible Causes of the DTC P1506 2012 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 2012 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 2012 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 P1506 2012 Ford Fusion Code

1. What does the OBDII code P1506 mean on a 2012 Ford Fusion?

P1506 indicates an "Idle Air Control (IAC) Overspeed Error," meaning the engine's idle speed is higher than the manufacturerâ€™s specified range.

2. What are common symptoms of the P1506 code in a 2012 Ford Fusion?

Common symptoms include high or fluctuating idle RPM, rough idling, stalling, or the Check Engine Light being illuminated.

3. What causes the P1506 code to appear?

Possible causes include a faulty Idle Air Control (IAC) valve, vacuum leaks, a dirty throttle body, or issues with the engine control module (ECM).

4. Can a dirty throttle body trigger the P1506 code?

Yes, a dirty throttle body can restrict airflow and cause improper idle control, leading to the P1506 code.

5. How do I diagnose a P1506 code on a 2012 Ford Fusion?

Diagnosis involves inspecting the IAC valve for damage, checking for vacuum leaks, cleaning the throttle body, and using a scan tool to monitor idle RPM.

6. Is it safe to drive with the P1506 code active?

Driving with the P1506 code can be risky as it may cause stalling or unpredictable idle behavior, which could compromise safety.

7. How do I fix the P1506 error code?

Repairs may include cleaning or replacing the IAC valve, checking and repairing vacuum leaks, cleaning the throttle body, or updating the ECM software.

8. What tools are needed to address the P1506 code?

Youâ€™ll need a scan tool, basic hand tools, throttle body cleaner, and possibly a vacuum tester to diagnose and repair the issue.

9. Can a vacuum leak cause the P1506 code?

Yes, vacuum leaks can cause unmetered air to enter the engine, leading to an idle speed higher than specified and triggering the code.

10. How much does it cost to repair a P1506 code on a 2012 Ford Fusion?

The repair cost varies, but cleaning the throttle body or IAC valve is inexpensive, while replacing the IAC valve or fixing vacuum leaks may cost $100â€“$300 depending on labor and parts.