AutoCodes – Ford – P1507 2001 Ford F150

P1507 2001 Ford F150 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 2001 Ford F150 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 3,756

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 2001 Ford F150 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 2001 Ford F150 - Idle Air Control Under Speed Error - AutoCodes.com — P1507 2001 Ford F150 Code - Idle Air Control Under Speed Error

What does this mean?

What are the Possible Causes of the DTC P1507 2001 Ford F150?

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 2001 Ford F150?

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 2001 Ford F150 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 2001 Ford F150 Code

1. What does the OBDII code P1507 mean on a 2001 Ford F150?

- The code P1507 on a 2001 Ford F150 indicates an "Idle Air Control Under Speed Error," meaning that the idle speed is lower than expected due to a potential issue with the Idle Air Control (IAC) system.

2. What are common symptoms of code P1507 in a 2001 Ford F150?

- Common symptoms include a rough or fluctuating idle, the engine stalling at idle, the engine light turning on, and possible issues with engine performance during low speeds or when stopped.

3. What can cause the P1507 code to appear on a 2001 Ford F150?

- Causes of the P1507 code can include a faulty Idle Air Control (IAC) valve, vacuum leaks, dirty or clogged IAC valve, issues with the electrical connections to the IAC, or a problem with the engine control module (ECM).

4. How can I fix the code P1507 on my 2001 Ford F150?

- Fixing the code can involve cleaning or replacing the Idle Air Control (IAC) valve, checking for and repairing any vacuum leaks, cleaning the throttle body, checking the electrical connections to the IAC valve, or in some cases, updating or repairing the ECM.

5. Is it safe to drive my 2001 Ford F150 with the P1507 code?

- While it might be safe to drive for a short distance, it's advisable to address the issue as soon as possible to avoid potential stalling or other engine performance issues that could compromise vehicle safety.

6. How do I diagnose the P1507 code on a 2001 Ford F150?

- Diagnosing the P1507 code typically involves using a scan tool to read the ECM's data, inspecting the IAC valve and its connections, checking for vacuum leaks around the engine, and testing the functionality of the IAC valve with a multimeter.

7. Can a dirty IAC valve cause the P1507 code in a 2001 Ford F150?

- Yes, a dirty or clogged IAC valve can cause the P1507 code as it may not be able to regulate the air entering the engine at idle properly, leading to an under-speed condition.

8. What is the cost of repairing the P1507 code on a 2001 Ford F150?

- The cost can vary widely depending on the specific repair needed. Cleaning the IAC valve may cost around $50-$150, while replacing the IAC valve can range from $200 to $400 including parts and labor.

9. How important is it to address the P1507 code immediately in a 2001 Ford F150?

- It is fairly important to address this issue promptly as ignoring it can lead to further engine performance issues, increased fuel consumption, and potential stalling that could be dangerous in traffic situations.

10. What maintenance steps can prevent the P1507 code in a 2001 Ford F150?

- Regular maintenance including cleaning the throttle body, checking for vacuum leaks, ensuring the IAC valve is clean and functioning, and keeping the engine's software up to date can help prevent issues related to the P1507 code.