AutoCodes – Chevrolet – P0046 Chevrolet

P0046 Chevrolet Code - Turbocharger Boost Control Position Performance

Quick Answer

A smart turbocharger vane position actuator incorporates a brushless motor and is mounted on top of the turbocharger. Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator 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: P0046 Chevrolet indicates Turbocharger Boost Control Position Performance.
Common causes: Common causes include Faulty Turbocharger Vane Position Actuator, Turbocharger Vane Position Actuator harness is open or shorted, Turbocharger Vane Position Actuator 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 1,808

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 May 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0046 Chevrolet Description

A smart turbocharger vane position actuator incorporates a brushless motor and is mounted on top of the turbocharger. It is connected to the vanes by a linkage rod. The vanes are used to vary the amount of boost pressure and can control the boost pressure independent of engine speed. The vanes mount to a unison ring which is rotated to change the vane angle. The Engine Control Module (ECM) communicates with the actuator via the Controller Area Network (CAN) bus. The ECM will vary the vane angle which adjusts the boost dependent on the load requirements of the engine. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the difference between the commanded turbocharger vane position and the actual turbocharger vane position is greater than 15%, for greater than 10 s.

OBDII Code P0046 Chevrolet - Turbocharger Boost Control Position Performance - AutoCodes.com — P0046 Chevrolet Code - Turbocharger Boost Control Position Performance

What does this mean?

What are the Possible Causes of the DTC P0046 Chevrolet?

Faulty Turbocharger Vane Position Actuator
Turbocharger Vane Position Actuator harness is open or shorted
Turbocharger Vane Position Actuator circuit poor electrical connection
Faulty Turbocharger Assembly

How to Fix the DTC P0046 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 P0046 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.

Need more information about the P0046 Chevrolet code?

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Information for Specific Chevrolet Models

P0046 2014 Chevrolet Silverado — Turbocharger Boost Control Position Performance
P0046 2015 Chevrolet Silverado — Turbocharger Boost Control Position Performance
P0046 2016 Chevrolet Silverado — Turbocharger Boost Control Position Performance
P0046 2017 Chevrolet Silverado — Turbocharger Boost Control Position Performance
P0046 2018 Chevrolet Silverado — Turbocharger Boost Control Position Performance

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 P0046 Chevrolet Code

1. What are the common symptoms of OBDII code P0046 in a Chevrolet related to Turbocharger Boost Control Position Performance?

- Common symptoms include reduced engine power, poor acceleration, rough idle, and potential stalling.

2. What are the typical causes of OBDII code P0046 in a Chevrolet indicating Turbocharger Boost Control Position Performance issues?

- The code is often triggered by a faulty turbocharger wastegate actuator, damaged wiring or connectors, or a malfunctioning turbocharger boost control position sensor.

3. How can I diagnose the OBDII code P0046 in my Chevrolet for Turbocharger Boost Control Position Performance problems?

- Diagnostic steps may include checking the wastegate actuator for proper operation, inspecting the sensor and related wiring, and using a scan tool to monitor turbocharger boost control data.

4. Can a dirty or clogged turbocharger cause OBDII code P0046 in a Chevrolet to appear?

- Yes, a dirty or clogged turbocharger can disrupt the boost control position performance, leading to the triggering of code P0046.

5. What are some repair tips for resolving OBDII code P0046 associated with Turbocharger Boost Control Position Performance in a Chevrolet?

- Repair tips may involve cleaning or replacing the turbocharger wastegate actuator, repairing damaged wiring, and ensuring proper installation and calibration of the boost control position sensor.

6. Is it safe to continue driving my Chevrolet with OBDII code P0046 related to Turbocharger Boost Control Position Performance?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to further engine damage and performance issues. It's best to address the problem promptly.

7. How much does it typically cost to repair OBDII code P0046 in a Chevrolet caused by Turbocharger Boost Control Position Performance concerns?

- Repair costs can vary depending on the exact cause of the issue, but they may range from around $200 to $800, including parts and labor.

8. Can resetting the OBDII code P0046 in a Chevrolet resolve the Turbocharger Boost Control Position Performance problem?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code to appear. Proper diagnosis and repair are necessary.

9. Are there any preventive maintenance measures I can take to avoid OBDII code P0046 related to Turbocharger Boost Control Position Performance in my Chevrolet?

- Regularly inspecting and maintaining the turbocharger system, including the wastegate actuator and related components, can help prevent issues that may trigger code P0046.

10. How long does it typically take to repair OBDII code P0046 in a Chevrolet due to Turbocharger Boost Control Position Performance problems?

- The repair time can vary depending on the specific cause of the issue, but it may take anywhere from 1 to 4 hours for a professional technician to diagnose and fix the problem.