AutoCodes – Ford – P1507 Ford

P1507 Ford 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 Ford 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 70,776

How popular is this code, among other codes? Medium

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

What does this mean?

What are the Possible Causes of the DTC P1507 Ford?

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 Ford?

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 Ford 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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Information for Specific Ford Models

P1507 1997 Ford F150 — Idle Air Control Under Speed Error
P1507 1998 Ford F150 — Idle Air Control Under Speed Error
P1507 1999 Ford F150 — Idle Air Control Under Speed Error
P1507 2000 Ford F150 — Idle Air Control Under Speed Error
P1507 2001 Ford F150 — Idle Air Control Under Speed Error
P1507 2002 Ford F150 — Idle Air Control Under Speed Error
P1507 2003 Ford F150 — Idle Air Control Under Speed Error
P1507 2006 Ford Fusion — Idle Air Control Under Speed Error
P1507 2007 Ford Fusion — Idle Air Control Under Speed Error
P1507 2008 Ford Fusion — Idle Air Control Under Speed Error
P1507 2009 Ford Fusion — Idle Air Control Under Speed Error
P1507 2010 Ford Fusion — Idle Air Control Under Speed Error
P1507 2011 Ford Fusion — Idle Air Control Under Speed Error
P1507 2012 Ford Fusion — Idle Air Control Under Speed Error

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 Ford Code

1. What are the common symptoms of OBDII code P1507 in a Ford vehicle?

- Common symptoms of OBDII code P1507 include rough idle, stalling at idle, fluctuating idle speed, and potential engine hesitation.

2. What does the OBDII code P1507 "Idle Air Control Under Speed Error" mean in a Ford car?

- The OBDII code P1507 indicates that the idle air control system is not operating within the expected range, leading to an idle speed error.

3. What are the possible causes of OBDII code P1507 in a Ford vehicle?

- Possible causes of OBDII code P1507 include a faulty idle air control valve, vacuum leaks, dirty throttle body, or issues with the engine's computer system.

4. How can I diagnose the OBDII code P1507 in my Ford car?

- To diagnose OBDII code P1507, you can start by checking for vacuum leaks, inspecting the idle air control valve, cleaning the throttle body, and scanning the vehicle's computer for additional error codes.

5. Can I drive my Ford vehicle with OBDII code P1507 active?

- It is not recommended to drive your Ford vehicle with OBDII code P1507 active, as it can lead to poor engine performance, stalling, and potential damage to other engine components.

6. How can I repair OBDII code P1507 in my Ford vehicle?

- Repairing OBDII code P1507 may involve cleaning or replacing the idle air control valve, fixing any vacuum leaks, cleaning the throttle body, and resetting the engine control module.

7. Will resetting the engine control module clear OBDII code P1507 in my Ford car?

- Resetting the engine control module may temporarily clear OBDII code P1507, but if the underlying issue is not addressed, the code is likely to reappear.

8. Can a dirty throttle body cause OBDII code P1507 in a Ford vehicle?

- Yes, a dirty throttle body can restrict airflow and cause the idle air control system to operate improperly, potentially triggering OBDII code P1507.

9. Is OBDII code P1507 a serious issue in a Ford car?

- OBDII code P1507 should be addressed promptly, as it can lead to poor engine performance, stalling, and other drivability issues if left unresolved.

10. How can I prevent OBDII code P1507 from reoccurring in my Ford vehicle?

- To prevent OBDII code P1507 from reoccurring, it is essential to perform regular maintenance, including cleaning the throttle body, checking for vacuum leaks, and ensuring the idle air control system is functioning properly.