AutoCodes – Chevrolet – P2071 Chevrolet

P2071 Chevrolet Code - Intake Manifold Tuning Valve Stuck Closed

Quick Answer

An Intake Manifold Tuning (IMT) Valve is used to change the intake manifold plenum configuration. Common causes include Faulty Intake Manifold Tuning Valve, 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: P2071 Chevrolet indicates Intake Manifold Tuning Valve Stuck Closed.
Common causes: Common causes include Faulty Intake Manifold Tuning Valve, 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 864

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 Nov 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2071 Chevrolet Description

An Intake Manifold Tuning (IMT) Valve is used to change the intake manifold plenum configuration. When the IMT valve is open, the intake manifold is configured to one large plenum. When the IMT valve is closed, the intake manifold is configured to 2 smaller plenums. The IMT valve improves engine performance at low and high engine speeds depending on the engine load. The Diagnostic Trouble Code (DTC) will set when the control module detects that the IMT valve is stuck closed. This diagnostic runs continuously when the above conditions are met.

OBDII Code P2071 Chevrolet - Intake Manifold Tuning Valve Stuck Closed - AutoCodes.com — P2071 Chevrolet Code - Intake Manifold Tuning Valve Stuck Closed

What does this mean?

What are the Possible Causes of the DTC P2071 Chevrolet?

Faulty Intake Manifold Tuning Valve
Intake Manifold Tuning Valve harness is open or shorted
Intake Manifold Tuning Valve circuit poor electrical connection

How to Fix the DTC P2071 Chevrolet?

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 P2071 Chevrolet 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 P2071 Chevrolet Code

1. What does the OBDII code P2071 mean on a Chevrolet?

P2071 indicates that the Intake Manifold Tuning (IMT) Valve is stuck in the closed position, affecting the engine's airflow and performance.

2. What are the common symptoms of code P2071 on a Chevrolet?

Symptoms may include reduced engine power, poor acceleration, rough idling, decreased fuel efficiency, and the Check Engine Light being illuminated.

3. What causes the P2071 code to appear on a Chevrolet?

Common causes include a stuck or faulty IMT valve, carbon buildup in the intake manifold, a damaged IMT actuator, wiring issues, or a failed PCM.

4. Can I drive my Chevrolet with a P2071 code?

Driving with this code is possible but not recommended, as it can lead to poor performance, reduced fuel efficiency, and potential engine damage if left unresolved.

5. How do I fix the P2071 code on a Chevrolet?

Repairs may involve cleaning or replacing the IMT valve, checking and repairing wiring or connections, removing carbon buildup in the intake manifold, or replacing the IMT actuator if necessary.

6. How much does it cost to repair the P2071 code on a Chevrolet?

The cost can vary, ranging from $200 to $600 depending on whether parts like the IMT valve or actuator need replacement and labor rates at your repair shop.

7. Can a dirty air filter cause the P2071 code on a Chevrolet?

While unlikely, a severely clogged air filter may contribute to airflow issues, but the primary cause is usually related to the IMT valve or actuator.

8. How do mechanics diagnose the P2071 code on a Chevrolet?

Mechanics use an OBDII scanner to confirm the code, inspect the IMT valve and actuator, check for vacuum leaks, and test electrical connections and sensors in the intake system.

9. Will clearing the P2071 code with a scanner fix the problem?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue causing the P2071 code must be addressed to prevent it from returning.

10. Can carbon buildup cause the P2071 code on a Chevrolet?

Yes, excessive carbon buildup in the intake manifold can prevent the IMT valve from moving freely, leading to the P2071 code. Regular maintenance and cleaning can help prevent this.