AutoCodes – Mercury – P0665 Mercury

P0665 Mercury Code - Intake Manifold Tuning Valve Control Circuit High 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: P0665 Mercury indicates Intake Manifold Tuning Valve Control Circuit High 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 1,247

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 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0665 Mercury Description

OBDII Code P0665 Mercury - Intake Manifold Tuning Valve Control Circuit High Bank 2 - AutoCodes.com — P0665 Mercury Code - Intake Manifold Tuning Valve Control Circuit High Bank 2

What does this mean?

What are the Possible Causes of the DTC P0665 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 P0665 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 P0665 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.

Need more information about the P0665 Mercury code?

Need more information on how to fix the P0665 Mercury code? Get Access to Factory Service Manuals

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Get the P0665 Mercury 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 P0665 Mercury Code

1. What are the common symptoms of OBDII code P0665 (Intake Manifold Tuning Valve Control Circuit High Bank 2)?

The common symptoms include decreased engine performance, rough idling, stalling, and illuminated Check Engine Light.

2. What can cause the OBDII code P0665 to trigger in a Mercury vehicle?

The code P0665 is usually triggered by a malfunction in the intake manifold tuning valve control circuit on Bank 2, which can be caused by wiring issues, a faulty valve, or a problem with the control module.

3. How serious is the OBDII code P0665 in a Mercury?

While the vehicle may still be operable with this code, it is important to address it promptly to prevent further damage to the engine and ensure optimal performance.

4. How can I diagnose the cause of the OBDII code P0665 in my Mercury?

Diagnosing the issue may involve conducting a thorough inspection of the wiring, connectors, intake manifold tuning valve, and control module to identify any faults or damages.

5. Can I continue driving my Mercury with the OBDII code P0665 present?

It is generally not recommended to continue driving with this code active, as it can lead to reduced engine efficiency and potential long-term damage if left unresolved.

6. What are some repair tips for fixing the OBDII code P0665 in a Mercury?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the intake manifold tuning valve if defective, and resetting the fault codes after repairs are made.

7. How much does it cost to repair the OBDII code P0665 in a Mercury?

The cost of repairing this code can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is advisable to consult a mechanic for an accurate estimate.

8. Can I reset the OBDII code P0665 in my Mercury without fixing the underlying issue?

While you can temporarily clear the code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

9. Are there any recalls or technical service bulletins related to the OBDII code P0665 in Mercury vehicles?

It is advisable to check with the manufacturer or a trusted mechanic to see if there are any relevant recalls or technical service bulletins related to this specific OBDII code in your Mercury model.

10. How can I prevent the OBDII code P0665 from occurring in my Mercury in the future?

Regular maintenance, such as inspecting and replacing worn components, keeping up with scheduled tune-ups, and addressing any engine issues promptly, can help prevent the recurrence of the OBDII code P0665.