AutoCodes – Ford – P1504 2012 Ford Fusion

P1504 2012 Ford Fusion Code - Intake Air Control Circuit Malfunction

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 Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control 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: P1504 2012 Ford Fusion indicates Intake Air Control Circuit Malfunction.
Common causes: Common causes include Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control 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 2,312

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
Cost to Diagnose
FAQs
Comments
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Code P1504 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 P1504 2012 Ford Fusion - Intake Air Control Circuit Malfunction - AutoCodes.com — P1504 2012 Ford Fusion Code - Intake Air Control Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1504 2012 Ford Fusion?

Faulty Idle Air Control Valve
Idle Air Control Valve harness is open or shorted
Idle Air Control Valve circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1504 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1504 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.

Need more information about the P1504 2012 Ford Fusion code?

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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 P1504 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1504 in a 2012 Ford Fusion?

The common symptoms of OBDII code P1504 in a 2012 Ford Fusion include rough idling, engine stalling, decreased fuel efficiency, and potential acceleration issues.

2. What does the OBDII code P1504 indicate in a 2012 Ford Fusion?

OBDII code P1504 in a 2012 Ford Fusion indicates an intake air control circuit malfunction.

3. What are the possible causes of OBDII code P1504 in a 2012 Ford Fusion?

Possible causes of OBDII code P1504 in a 2012 Ford Fusion include a faulty intake air control valve, damaged wiring in the control circuit, or a malfunctioning PCM (Powertrain Control Module).

4. How can I diagnose the intake air control circuit malfunction causing OBDII code P1504 in my 2012 Ford Fusion?

You can diagnose the intake air control circuit malfunction causing OBDII code P1504 by checking the wiring connections, testing the intake air control valve, and using a diagnostic scanner to read live data from the PCM.

5. Can I drive my 2012 Ford Fusion with OBDII code P1504?

It is not recommended to drive your 2012 Ford Fusion with OBDII code P1504, as it can lead to further engine performance issues and potential damage if left unresolved.

6. How can I repair OBDII code P1504 in my 2012 Ford Fusion?

To repair OBDII code P1504 in your 2012 Ford Fusion, you may need to replace the intake air control valve, repair any damaged wiring in the circuit, or reprogram the PCM if necessary.

7. Is it possible to clear OBDII code P1504 in my 2012 Ford Fusion by resetting the PCM?

Clearing OBDII code P1504 in your 2012 Ford Fusion by resetting the PCM may temporarily remove the code, but it is important to diagnose and address the root cause of the issue to prevent the code from reappearing.

8. How much does it typically cost to repair OBDII code P1504 in a 2012 Ford Fusion?

The cost to repair OBDII code P1504 in a 2012 Ford Fusion can vary depending on the specific issue causing the code, but it may range from $100 to $500 for parts and labor.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1504 in a 2012 Ford Fusion?

A DIY enthusiast with basic automotive knowledge may be able to diagnose and fix OBDII code P1504 in a 2012 Ford Fusion, especially if the issue is related to simple wiring repairs or valve replacements.

10. How often does OBDII code P1504 occur in a 2012 Ford Fusion?

OBDII code P1504 in a 2012 Ford Fusion is relatively uncommon, but it can occur due to various factors such as age, mileage, and maintenance history of the vehicle.