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Engine-Codes – Generic – P2077

P2077 Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1

Quick Answer

The P2077 diagnostic trouble code (DTC) refers to the Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low on Bank 1. Common causes include Faulty intake manifold tuning valve position sensor/switch, Wiring or electrical issues in the sensor circuit, Vacuum leaks in the intake manifold. 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
P2077 indicates Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1.
Common causes
Common causes include Faulty intake manifold tuning valve position sensor/switch, Wiring or electrical issues in the sensor circuit, Vacuum leaks in the intake manifold.
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 P2077 Description

The P2077 diagnostic trouble code (DTC) refers to the Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low on Bank 1. This code indicates that there is a problem with the sensor or switch that monitors the position of the intake manifold tuning valve in relation to the engine's bank 1. The intake manifold tuning valve is responsible for controlling the flow of air into the engine, optimizing performance and fuel efficiency. When this sensor or switch malfunctions, it can lead to a variety of issues that can affect the vehicle's performance.

OBDII Code P2077 - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1
P2077 Code - Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1

Common Causes of P2077

  1. Faulty intake manifold tuning valve position sensor/switch
  2. Wiring or electrical issues in the sensor circuit
  3. Vacuum leaks in the intake manifold
  4. Carbon buildup in the intake manifold
  5. ECM software or hardware malfunction

Symptoms of P2077

  1. Check engine light illuminated on the dashboard
  2. Reduced engine performance or power
  3. Poor fuel efficiency
  4. Engine stalling or hesitation
  5. Rough idle or vibrations

How to Fix P2077

  1. Perform a diagnostic scan to confirm the P2077 code and identify the specific issue.
  2. Inspect the intake manifold tuning valve position sensor/switch for any visible damage or malfunction.
  3. Check the wiring and connections in the sensor circuit for any corrosion, breaks, or loose connections.
  4. Test the intake manifold for any vacuum leaks and repair as necessary.
  5. Clear the DTC and reset the ECM to see if the code returns after the repairs have been completed.

Cost to Fix P2077

The typical repair costs for addressing the P2077 code can vary depending on the specific cause of the issue and the vehicle's make and model. Generally, the parts required for this repair, such as a new intake manifold tuning valve position sensor/switch, wiring harness, or intake manifold gaskets, can range from $100 to $300. Labor costs at an auto repair shop can add an additional $100 to $300, bringing the total repair estimate to around $200 to $600. It is important to note that diagnosis time and labor rates can vary, so it's advisable to contact local auto repair shops for a more accurate estimate.

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Code P2077 Information for Specific Makes

  • P2077 Buick — Intake Manifold Tuning Valve Position Sensor Circuit Low Voltage
  • P2077 Cadillac — Intake Manifold Tuning Valve Position Sensor Circuit Low Voltage
  • P2077 Chevrolet — Intake Manifold Tuning Valve Position Sensor Circuit Low Voltage
  • P2077 Dodge — Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1
  • P2077 Ford — Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1
  • P2077 GMC — Intake Manifold Tuning Valve Position Sensor Circuit Low Voltage
  • P2077 Lincoln — Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1
  • P2077 Mercury — Intake Manifold Tuning Valve Position Sensor/Switch Circuit Low Bank 1
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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