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P2079 Lincoln Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent

Quick Answer

The P2079 diagnostic trouble code (DTC) in a Lincoln vehicle indicates a problem with the Intake Manifold Tuning Valve Position Sensor/Switch Circuit being intermittent. Common causes include Faulty Sensor/Switch: The most common cause of this code is a faulty intake manifold tuning valve position sensor or switch, Wiring Issues: Damaged or corroded wiring connections to the sensor or switch can also trigger this code, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can disrupt the sensor's readings. 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
P2079 Lincoln indicates Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent.
Common causes
Common causes include Faulty Sensor/Switch: The most common cause of this code is a faulty intake manifold tuning valve position sensor or switch, Wiring Issues: Damaged or corroded wiring connections to the sensor or switch can also trigger this code, Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can disrupt the sensor's readings.
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 09, 2024
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Code P2079 Lincoln Description

The P2079 diagnostic trouble code (DTC) in a Lincoln vehicle indicates a problem with the Intake Manifold Tuning Valve Position Sensor/Switch Circuit being intermittent. This means that the engine control module (ECM) is receiving inconsistent or incorrect signals from the sensor or switch that monitors the position of the intake manifold tuning valve. The intake manifold tuning valve is responsible for controlling the airflow within the intake manifold, optimizing performance and efficiency based on driving conditions.

OBDII Code P2079 Lincoln - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent
P2079 Lincoln Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Intermittent

Common Causes of P2079 Lincoln

  1. Faulty Sensor/Switch: The most common cause of this code is a faulty intake manifold tuning valve position sensor or switch.
  2. Wiring Issues: Damaged or corroded wiring connections to the sensor or switch can also trigger this code.
  3. Vacuum Leaks: Any leaks in the intake manifold or vacuum lines can disrupt the sensor's readings.
  4. Carbon Buildup: Accumulation of carbon deposits within the intake manifold can affect the valve's operation.
  5. ECM Malfunction: In rare cases, a malfunctioning engine control module could be the root cause of the issue.

Symptoms of P2079 Lincoln

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Power: The vehicle may experience a loss of power or performance, especially during acceleration.
  3. Rough Idling: The engine may idle roughly or inconsistently, with noticeable vibrations.
  4. Decreased Fuel Efficiency: A malfunctioning intake manifold tuning valve can cause the engine to consume more fuel than usual.
  5. Stalling: In severe cases, the vehicle may stall or have difficulty starting.

How to Fix P2079 Lincoln

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific error codes and perform a thorough inspection of the intake manifold tuning valve sensor/switch and related components.
  2. Replace Sensor/Switch: If the sensor or switch is found to be faulty, replace it with a new, OEM-quality part.
  3. Check Wiring: Inspect the wiring harness for any damage or corrosion, repairing or replacing as needed.
  4. Clean Intake Manifold: Remove any carbon buildup within the intake manifold to ensure proper airflow.
  5. Clear Codes: After completing the repairs, clear the error codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2079 Lincoln

The typical repair costs for addressing a P2079 code in a Lincoln vehicle can vary depending on the specific model and year. In general, the cost of replacing the intake manifold tuning valve position sensor or switch ranges from $150 to $300, including parts and labor. Additional costs may apply if there are wiring issues or other related components that require attention. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to get a more accurate estimate.

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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.

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