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Engine-Codes – Mercury – P0660 Mercury

P0660 Mercury Code - Intake Manifold Tuning Valve Control Circuit Open Bank 1

Quick Answer

The P0660 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the intake manifold tuning valve control circuit on Bank 1. Common causes include Faulty Intake Manifold Tuning Valve: The valve itself may be malfunctioning, causing the control circuit to remain open, Wiring Issues: There may be a wiring problem, such as a short or open circuit, preventing proper communication with the intake manifold tuning valve, Electrical Connection Problems: Poor connections or corrosion at the electrical connectors can disrupt the flow of current to the valve. 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 Mercury indicates Intake Manifold Tuning Valve Control Circuit Open Bank 1.
Common causes
Common causes include Faulty Intake Manifold Tuning Valve: The valve itself may be malfunctioning, causing the control circuit to remain open, Wiring Issues: There may be a wiring problem, such as a short or open circuit, preventing proper communication with the intake manifold tuning valve, Electrical Connection Problems: Poor connections or corrosion at the electrical connectors can disrupt the flow of current to the valve.
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 08, 2024
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Code P0660 Mercury Description

The P0660 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the intake manifold tuning valve control circuit on Bank 1. In modern vehicles, the intake manifold tuning valve is responsible for adjusting the length of the intake runners to optimize engine performance at different RPMs. This helps improve fuel efficiency, torque, and overall engine power output.

OBDII Code P0660 Mercury - Intake Manifold Tuning Valve Control Circuit Open Bank 1
P0660 Mercury Code - Intake Manifold Tuning Valve Control Circuit Open Bank 1

Common Causes of P0660 Mercury

  1. Faulty Intake Manifold Tuning Valve: The valve itself may be malfunctioning, causing the control circuit to remain open.
  2. Wiring Issues: There may be a wiring problem, such as a short or open circuit, preventing proper communication with the intake manifold tuning valve.
  3. Electrical Connection Problems: Poor connections or corrosion at the electrical connectors can disrupt the flow of current to the valve.
  4. ECM/PCM Malfunction: A malfunction in the engine control module (ECM) or powertrain control module (PCM) can also trigger the P0660 code.
  5. Vacuum Leaks: Any vacuum leaks in the intake manifold system can affect the operation of the tuning valve, leading to the code being triggered.

Symptoms of P0660 Mercury

  1. Check Engine Light: The most common symptom associated with the P0660 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: Drivers may notice a decrease in engine power or responsiveness, especially at higher RPMs.
  3. Poor Fuel Economy: The vehicle may experience a drop in fuel efficiency due to the improper functioning of the intake manifold tuning valve.
  4. Rough Idle: The engine may idle roughly or inconsistently, causing vibrations or shaking in the vehicle.
  5. Stalling: In severe cases, the engine may stall or have difficulty starting due to the intake manifold tuning valve control circuit issue.

How to Fix P0660 Mercury

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific DTC and further diagnose the root cause of the P0660 code.
  2. Inspect Wiring and Connectors: Check the wiring harness and connectors for any signs of damage, corrosion, or poor connections. Repair or replace as needed.
  3. Test Intake Manifold Tuning Valve: Test the functionality of the intake manifold tuning valve to determine if it is faulty and needs replacement.
  4. Repair Vacuum Leaks: Inspect the intake manifold system for any vacuum leaks and repair them to ensure proper operation of the tuning valve.
  5. Clear Codes and Test Drive: After making the necessary repairs, clear the DTC from the ECM/PCM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0660 Mercury

The cost of repairing the P0660 code for a Mercury vehicle can vary depending on the specific model, location, and labor rates at auto repair shops. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. This estimate includes diagnostic time, parts replacement (if necessary), and labor costs. It is recommended to consult with a qualified mechanic or auto repair shop to get a more accurate cost estimate based on your vehicle's specific needs. Keep in mind that rates may vary, so it is essential to inquire about pricing before proceeding with the repairs.

When is the Code Detected?

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

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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 Mercury Code

1. What are common symptoms of OBDII code P0660 on a Mercury related to the Intake Manifold Tuning Valve Control Circuit Open Bank 1?

The common symptoms include rough idling, reduced engine performance, and the illumination of the check engine light.

2. What can cause the Intake Manifold Tuning Valve Control Circuit Open Bank 1 code P0660 on a Mercury?

Possible causes of this code include a faulty intake manifold tuning valve, damaged wiring or connectors in the control circuit, or a malfunctioning PCM (powertrain control module).

3. How can I diagnose the Intake Manifold Tuning Valve Control Circuit Open Bank 1 issue on my Mercury?

Diagnosis typically involves using an OBDII scanner to read the stored fault codes, inspecting the intake manifold tuning valve and related components, and testing the circuit for continuity and proper voltage.

4. Is it safe to continue driving my Mercury with the P0660 code for Intake Manifold Tuning Valve Control Circuit Open Bank 1?

It is not recommended to drive the vehicle with this code present, as it can lead to poor engine performance and potential damage if left untreated.

5. Can I repair the Intake Manifold Tuning Valve Control Circuit Open Bank 1 issue on my Mercury myself?

Depending on your skill level and access to tools, you may be able to repair this issue yourself by replacing the faulty components or repairing the damaged wiring. However, professional assistance is recommended for accurate diagnosis and proper repair.

6. How much does it typically cost to repair the P0660 code on a Mercury for the Intake Manifold Tuning Valve Control Circuit Open Bank 1?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500, including parts and labor.

7. Can a dirty or clogged intake manifold cause the P0660 code on a Mercury?

While a dirty or clogged intake manifold may not directly cause the P0660 code, it can contribute to overall engine performance issues and should be addressed as part of regular maintenance.

8. Will resetting the check engine light make the P0660 code go away on a Mercury?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P0660 code is not fixed, the light will likely come back on after driving for a short period.

9. How urgent is it to address the P0660 code for Intake Manifold Tuning Valve Control Circuit Open Bank 1 on a Mercury?

It is recommended to address this code as soon as possible to prevent further engine damage and ensure optimal performance of your vehicle.

10. Can a faulty oxygen sensor trigger the P0660 code on a Mercury?

While a faulty oxygen sensor is not a common cause of the P0660 code, it is still important to properly diagnose the issue to determine the exact cause and make the necessary repairs.

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