AutoCodes – Isuzu – P0660 Isuzu

P0660 Isuzu Code - Variable Intake Manifold Circuit Open- Solenoid

Quick Answer

The Engine Control Module (ECM) continuously monitors the Intake Manifold Tuning Valve (IMTV) system during the 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: P0660 Isuzu indicates Variable Intake Manifold Circuit Open- Solenoid.
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 5,806

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 Dec 14, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0660 Isuzu Description

The Engine Control Module (ECM) continuously monitors the Intake Manifold Tuning Valve (IMTV) system during the Key ON engine OFF or key ON engine running self-test. The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module detects an improper signal from the Intake Manifold Tuning Valve.

OBDII Code P0660 Isuzu - Variable Intake Manifold Circuit Open- Solenoid - AutoCodes.com — P0660 Isuzu Code - Variable Intake Manifold Circuit Open- Solenoid

What does this mean?

What are the Possible Causes of the DTC P0660 Isuzu?

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 P0660 Isuzu?

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 P0660 Isuzu 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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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 Isuzu Code

1. What are the common symptoms of OBDII code P0660 on an Isuzu?

The common symptoms of P0660 on an Isuzu include poor engine performance, reduced fuel efficiency, stalling or rough idling, and the Check Engine Light illuminating.

2. What does the OBDII code P0660 on an Isuzu indicate?

P0660 indicates a malfunction in the Variable Intake Manifold Circuit Open Solenoid in the engine control module.

3. What are the possible causes of OBDII code P0660 on an Isuzu?

Possible causes of P0660 on an Isuzu include a faulty intake manifold tuning valve control solenoid, damaged wiring or connectors, or a problem with the engine control module.

4. How can I diagnose the Variable Intake Manifold Circuit Open Solenoid issue on my Isuzu?

To diagnose P0660, you can use a scan tool to retrieve the trouble codes, inspect the wiring and connectors for any damage, and test the intake manifold tuning valve control solenoid for proper functionality.

5. Can I still drive my Isuzu with OBDII code P0660?

It is not recommended to drive your Isuzu with P0660 for an extended period, as it can lead to further engine damage and poor performance. It is best to address the issue promptly.

6. How can I repair OBDII code P0660 on my Isuzu?

Repairs for P0660 may involve replacing the intake manifold tuning valve control solenoid, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module.

7. Are there any DIY tips for fixing OBDII code P0660 on an Isuzu?

While basic inspections and visual checks can be done by DIY enthusiasts, diagnosing and repairing P0660 may require specialized tools and expertise. It is recommended to consult a professional mechanic.

8. Will resetting the Check Engine Light resolve OBDII code P0660 on my Isuzu?

Simply resetting the Check Engine Light will not fix the underlying issue causing P0660. It is essential to diagnose the problem accurately and address it accordingly.

9. Is OBDII code P0660 a common problem in Isuzu vehicles?

P0660 is a relatively common issue in Isuzu vehicles, especially in models equipped with variable intake manifolds. Regular maintenance and inspections can help prevent this problem.

10. Can a malfunctioning Variable Intake Manifold Circuit Open Solenoid affect the overall performance of my Isuzu?

Yes, a malfunctioning solenoid can significantly impact the overall performance of your Isuzu by affecting fuel efficiency, engine power, and drivability. It is crucial to address P0660 promptly.