AutoCodes – Ford – P0660 1999 Ford F150

P0660 1999 Ford F150 Code - Intake Manifold Tuning Valve circuit Malfunction

Quick Answer

The Powertrain Control Module (PCM) continuously monitor the Intake Manifold Tuning Valve (IMTV) system during Key ON Engine OFF (KOEO) or Key ON Engine Running (KOER) self-test. Common causes include Faulty Intake Manifold Tuning Valve (IMTV), Intake Manifold Tuning Valve harness is open or shorted, Intake Manifold Tuning 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: P0660 1999 Ford F150 indicates Intake Manifold Tuning Valve circuit Malfunction.
Common causes: Common causes include Faulty Intake Manifold Tuning Valve (IMTV), Intake Manifold Tuning Valve harness is open or shorted, Intake Manifold Tuning 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 2,428

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 04, 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 P0660 1999 Ford F150 Description

OBDII Code P0660 1999 Ford F150 - Intake Manifold Tuning Valve circuit Malfunction - AutoCodes.com — P0660 1999 Ford F150 Code - Intake Manifold Tuning Valve circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0660 1999 Ford F150?

Faulty Intake Manifold Tuning Valve (IMTV)
Intake Manifold Tuning Valve harness is open or shorted
Intake Manifold Tuning Valve circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0660 1999 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 IMTV system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is more or less than an the expected calibrated range.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0660 1999 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.

Need more information about the P0660 1999 Ford F150 code?

Need more information on how to fix the P0660 1999 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0660 1999 Ford F150 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 P0660 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0660 in a 1999 Ford F150?

- Common symptoms include poor engine performance, rough idling, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P0660 indicate in a 1999 Ford F150?

- OBDII code P0660 indicates a malfunction in the Intake Manifold Tuning Valve circuit in a 1999 Ford F150.

3. What are the possible causes of the Intake Manifold Tuning Valve circuit malfunction in a 1999 Ford F150?

- Possible causes include a faulty Intake Manifold Tuning Valve, damaged wiring or connectors, a defective PCM (Powertrain Control Module), or a vacuum leak.

4. How can I diagnose the Intake Manifold Tuning Valve circuit malfunction in my 1999 Ford F150?

- Diagnosis involves using an OBDII scanner to retrieve the specific trouble code, inspecting the wiring and connectors for damage, testing the resistance of the IMT valve, and checking for vacuum leaks.

5. Can I continue driving my 1999 Ford F150 with the P0660 code?

- It is not recommended to continue driving with the P0660 code illuminated as it can lead to further damage and reduced engine performance. It's best to address the issue promptly.

6. How can I repair the Intake Manifold Tuning Valve circuit malfunction in my 1999 Ford F150?

- Repair options may include replacing the Intake Manifold Tuning Valve, repairing damaged wiring or connectors, resetting the PCM, or fixing any vacuum leaks present.

7. Will resetting the PCM clear the P0660 code in my 1999 Ford F150?

- Resetting the PCM may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

8. Is it possible to drive my 1999 Ford F150 without fixing the Intake Manifold Tuning Valve circuit issue?

- While it may be possible to drive the vehicle, it is not recommended as it can lead to reduced fuel efficiency, poor engine performance, and potential long-term damage.

9. How much does it typically cost to repair the Intake Manifold Tuning Valve circuit issue in a 1999 Ford F150?

- The cost of repair can vary depending on the root cause of the issue, but it may range from $200 to $500, including parts and labor.

10. Can a DIY enthusiast fix the Intake Manifold Tuning Valve circuit issue in a 1999 Ford F150?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address the issue by following a repair manual or online guides. However, if unsure, it's best to consult a professional mechanic.