P2071 Fault Code

Intake Manifold Tuning (IMT) Valve Stuck Closed Bank 1a

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2071 fault code indicates that the Intake Manifold Tuning (IMT) Valve on Bank 1 is stuck in the closed position. This can lead to inefficient engine airflow and improper air-fuel mixture, affecting overall engine performance.

• The IMT valve is responsible for optimizing airflow into the engine by adjusting the intake manifold's structure based on engine load and speed.
• When this valve fails to operate correctly, various engine issues may arise, including decreased power and fuel efficiency.

What are the symptoms of the P2071 code?

Drivers may notice several symptoms when the P2071 code is triggered:

• Reduced engine power and acceleration, especially under load.
• Poor fuel economy due to an incorrect air-fuel mixture.
• Rough idling or stalling of the engine.
• Potential check engine light activation on the dashboard.

What causes the P2071 code?

Common causes of the P2071 code include:

• A malfunctioning IMT valve that is physically stuck or has failed electrically.
• Vacuum leaks or issues with the intake manifold that may prevent proper valve operation.
• Electrical problems, such as frayed wiring or a faulty connector to the IMT valve.
• Carbon buildup or debris that can obstruct the valve's movement.

How to fix P2071?

To resolve the P2071 issue, follow these steps:

• Inspect the IMT valve and its electrical connections for any signs of damage or disconnection.
• Clean or replace the IMT valve if it is clogged or stuck due to carbon deposits.
• Check for vacuum leaks in the intake manifold that could affect valve function.
• If necessary, replace any faulty wiring or connectors associated with the IMT system.
• Finally, reset the engine control module (ECM) and verify the repair by conducting a test drive and monitoring for a check engine light reactivation.