AutoCodes – Mercury – P0664 Mercury

P0664 Mercury Code - Intake Manifold Tuning Valve Control Circuit Low Bank 2

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: P0664 Mercury indicates Intake Manifold Tuning Valve Control Circuit Low Bank 2.
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.

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Code Popularity 1,111

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0664 Mercury Description

OBDII Code P0664 Mercury - Intake Manifold Tuning Valve Control Circuit Low Bank 2 - AutoCodes.com — P0664 Mercury Code - Intake Manifold Tuning Valve Control Circuit Low Bank 2

What does this mean?

What are the Possible Causes of the DTC P0664 Mercury?

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

How to Fix the DTC P0664 Mercury?

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 P0664 Mercury 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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Need more information on how to fix the P0664 Mercury code? Get Access to Factory Service Manuals

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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 P0664 Mercury Code

1. What are the common symptoms of OBDII code P0664 in a Mercury vehicle?

The common symptoms of code P0664 include poor engine performance, rough idling, reduced fuel efficiency, and illuminated Check Engine Light.

2. What does the OBDII code P0664 in a Mercury indicate?

Code P0664 indicates a problem with the Intake Manifold Tuning Valve Control Circuit Low in Bank 2 of the engine.

3. What are the possible causes of OBDII code P0664 in a Mercury?

Possible causes of code P0664 include a faulty intake manifold tuning valve, damaged wiring or connectors in the control circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the issue causing OBDII code P0664 in my Mercury?

Diagnosing code P0664 involves visually inspecting the intake manifold tuning valve and its wiring, checking for any loose connections, and using a multimeter to test the circuit for proper voltage.

5. Can I drive my Mercury with OBDII code P0664?

It is not recommended to drive your Mercury with code P0664 present, as it can lead to further engine damage and decreased performance. It's best to address the issue promptly.

6. How can I repair OBDII code P0664 in my Mercury?

To repair code P0664, you may need to replace the faulty intake manifold tuning valve, repair any damaged wiring or connectors, or reprogram the engine control module if necessary.

7. Is it possible to clear OBDII code P0664 in my Mercury without fixing the issue?

Clearing the code without fixing the underlying issue will only temporarily turn off the Check Engine Light. The problem causing the code will persist and may lead to more serious issues down the line.

8. Can a DIY enthusiast fix OBDII code P0664 in a Mercury?

Depending on your skills and tools, you may be able to fix code P0664 yourself by replacing the intake manifold tuning valve or repairing the wiring. However, professional diagnosis and repair are recommended for accurate and lasting results.

9. Are there any preventive measures to avoid OBDII code P0664 in a Mercury?

Regular maintenance, such as checking and cleaning the intake manifold tuning valve, inspecting wiring for wear, and using quality fuel, can help prevent issues that may trigger code P0664 in your Mercury.

10. How long does it typically take to repair OBDII code P0664 in a Mercury?

The repair time for code P0664 can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a day for a professional technician to diagnose and fix the problem.