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Engine-Codes – Generic – P0665

P0665 Code - Intake Manifold Tuning Valve Control Circuit High Bank 2

Quick Answer

The diagnostic trouble code P0665 indicates a problem with the intake manifold tuning valve control circuit on bank 2 of the engine. Common causes include Faulty intake manifold tuning valve, Wiring or connector issues in the control circuit, ECM malfunction. 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 indicates Intake Manifold Tuning Valve Control Circuit High Bank 2.
Common causes
Common causes include Faulty intake manifold tuning valve, Wiring or connector issues in the control circuit, ECM malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0665 Description

The diagnostic trouble code P0665 indicates a problem with the intake manifold tuning valve control circuit on bank 2 of the engine. The intake manifold tuning valve is responsible for adjusting the length of the intake manifold runners to optimize airflow into the engine, based on driving conditions and engine load. This system helps improve engine performance, fuel efficiency, and emissions control.

OBDII Code P0665 - Intake Manifold Tuning Valve Control Circuit High Bank 2
P0665 Code - Intake Manifold Tuning Valve Control Circuit High Bank 2

Common Causes of P0665

  1. Faulty intake manifold tuning valve
  2. Wiring or connector issues in the control circuit
  3. ECM malfunction
  4. Vacuum leaks in the intake system
  5. Carbon buildup in the intake manifold

Symptoms of P0665

  1. Check Engine Light illuminated on the dashboard
  2. Reduced engine performance
  3. Rough idling or stalling
  4. Decreased fuel efficiency
  5. Increased emissions

How to Fix P0665

  1. Begin by visually inspecting the wiring and connectors in the intake manifold tuning valve control circuit. Look for any signs of damage, corrosion, or loose connections.
  2. Test the intake manifold tuning valve using a multimeter to check for proper operation. Replace the valve if it is found to be faulty.
  3. Check for any vacuum leaks in the intake system that may be affecting the operation of the valve. Repair or replace any damaged hoses or gaskets.
  4. Clear the diagnostic trouble codes from the ECM using a scan tool, and then test drive the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the issue, such as testing the ECM or performing a smoke test to check for vacuum leaks.

Cost to Fix P0665

The cost of repairing a P0665 code can vary depending on the specific cause of the issue. In general, replacing the intake manifold tuning valve itself can cost between $150 and $300, including parts and labor. If the issue is related to wiring or connector problems, the cost may be lower, as it may only require repairing or replacing the damaged components. Additional diagnostic testing or labor may increase the overall cost of the repair.

When is the Code Detected?

The Engine Control Module (ECM) has detected a high signal from the Intake Manifold Tuning Valve (IMTV)

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Code P0665 Information for Specific Makes

  • P0665 Ford — Intake Manifold Tuning Valve Control Circuit High Bank 2
  • P0665 Hyundai — Intake Manifold Tuning Valve Control Circuit High Bank 2
  • P0665 KIA — Intake Manifold Tuning Valve Control Circuit High Bank 2
  • P0665 Lincoln — Intake Manifold Tuning Valve Control Circuit High Bank 2
  • P0665 Mazda — Intake Manifold Tuning Valve Control Circuit High Bank 2
  • P0665 Mercury — Intake Manifold Tuning Valve Control Circuit High Bank 2
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.

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