AutoCodes – Mazda – P0665 Mazda

P0665 Mazda 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 or key ON engine running 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 Mazda 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 4,098

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 Mazda Description

The Powertrain Control Module (PCM) continuously monitor the Intake Manifold Tuning Valve (IMTV) system during Key ON engine OFF or key ON engine running self-test. The PCM sets the OBDII code when the signal on is more or less than the expected calibrated range.

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

What does this mean?

What are the Possible Causes of the DTC P0665 Mazda?

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 Mazda?

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 Mazda 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 Mazda code?

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Need Help with the Code?

Get the P0665 Mazda 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 Mazda Code

1. What are the common symptoms of OBDII code P0665 in a Mazda related to the Intake Manifold Tuning Valve Control Circuit High Bank 2?

The common symptoms include engine performance issues, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P0665 in a Mazda?

Possible causes include a faulty intake manifold tuning valve, damaged wiring or connectors in the circuit, a failed PCM (powertrain control module), or a vacuum leak in the intake system.

3. How can I diagnose the cause of OBDII code P0665 in my Mazda?

Diagnosis involves using a scan tool to check for the specific fault code, inspecting the wiring and connectors for any damage, testing the resistance of the intake manifold tuning valve, and checking for vacuum leaks in the intake system.

4. Can I continue to drive my Mazda with OBDII code P0665 present?

It is not recommended to drive your Mazda with this fault code present, as it can lead to further damage to the engine and decrease in performance.

5. How can I repair OBDII code P0665 in my Mazda?

Repair options include replacing the intake manifold tuning valve, repairing or replacing damaged wiring or connectors, resetting the fault code with a scan tool, and ensuring the intake system is free of leaks.

6. Is OBDII code P0665 a common issue in Mazda vehicles?

While not extremely common, P0665 can occur in Mazda vehicles, particularly in models with intake manifold tuning valves.

7. Can a DIY enthusiast fix OBDII code P0665 in a Mazda?

Depending on the level of expertise, DIY enthusiasts may be able to diagnose and repair OBDII code P0665 in a Mazda, especially if they have experience with automotive electrical systems.

8. Will OBDII code P0665 cause permanent damage to my Mazda if left untreated?

Leaving OBDII code P0665 untreated can potentially cause further damage to the engine over time, leading to more extensive and costly repairs.

9. How long does it typically take to repair OBDII code P0665 in a Mazda?

The repair time for OBDII code P0665 can vary depending on the cause of the issue and the availability of parts, but it usually takes a few hours to a day to complete the repair.

10. Can resetting the Check Engine Light resolve OBDII code P0665 in a Mazda?

Resetting the Check Engine Light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing OBDII code P0665 in a Mazda.