AutoCodes – Acura – P0046 Acura

P0046 Acura Code - Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem

Quick Answer

The Powertrain Control Module (PCM) adjusts the boost pressure by controlling the Turbocharger Wastegate Control Actuator of the turbocharger. Common causes include Faulty Turbocharger Wastegate Control Actuator, Turbocharger Wastegate Control Actuator harness is open or shorted, Turbocharger Wastegate Control 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 Acura indicates Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem.
Common causes: Common causes include Faulty Turbocharger Wastegate Control Actuator, Turbocharger Wastegate Control Actuator harness is open or shorted, Turbocharger Wastegate Control 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 493

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 Jul 25, 2023

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

The Powertrain Control Module (PCM) adjusts the boost pressure by controlling the Turbocharger Wastegate Control Actuator of the turbocharger. Boost pressure becomes higher by fully closing the Turbocharger Wastegate Control Valve driven by the Turbocharger Wastegate Control Actuator. The Turbocharger Wastegate Control Valve position is detected by the Turbocharger Wastegate Control Actuator Position Sensor and the signal is input to the PCM for target position feedback control. The Turbocharger Wastegate Control Actuator Position Sensor value when the Turbocharger Wastegate Control Valve is fully closed is stored as a fully closed learning value. Target and actual positions are represented by the relative value from the fully closed position. The PCM sets a target position and outputs a drive signal to the driver IC and drives the Turbocharger Wastegate Control Actuator to be equal to the target position. If the difference of the Turbocharger Wastegate Control Valve between the target position and the actual position is a specified value for a specified time, the PCM detects a malfunction and stores a DTC.

OBDII Code P0046 Acura - Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem - AutoCodes.com — P0046 Acura Code - Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0046 Acura?

Faulty Turbocharger Wastegate Control Actuator
Turbocharger Wastegate Control Actuator harness is open or shorted
Turbocharger Wastegate Control Actuator circuit poor electrical connection

How to Fix the DTC P0046 Acura?

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 Acura 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 Acura code?

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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 P0046 Acura Code

1. What are the common symptoms of OBDII code P0046 in an Acura related to the Turbocharger Wastegate Control Actuator Circuit Range/Performance Problem?

- Common symptoms include reduced engine power, decreased fuel efficiency, and potential turbocharger issues like boost fluctuations.

2. What are some possible causes of OBDII code P0046 in an Acura?

- Potential causes of this code include a faulty wastegate control solenoid, wiring issues in the circuit, a defective wastegate actuator, or a malfunctioning turbocharger.

3. How can I diagnose OBDII code P0046 in my Acura?

- To diagnose this code, you may need to use an OBDII scanner to read the code and then inspect the wastegate control components, wiring, and connections for any visible damage or loose connections.

4. Is it safe to continue driving my Acura with OBDII code P0046 present?

- It is not recommended to drive with this code present, as it can lead to further damage to the turbocharger system and potentially cause engine performance issues.

5. How can I repair OBDII code P0046 in my Acura?

- Repairing this code typically involves replacing the faulty wastegate control solenoid, repairing any damaged wiring, or replacing the wastegate actuator or turbocharger if necessary.

6. Can a DIY enthusiast fix OBDII code P0046 in an Acura?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code by following the manufacturer's service manual and proper safety precautions.

7. Will resetting the check engine light resolve OBDII code P0046 in an Acura?

- Simply resetting the check engine light will not fix the underlying issue causing this code. It is important to diagnose and address the root cause of the problem to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P0046 in an Acura?

- The cost of repairing this code can vary depending on the specific cause, but it may range from $200 to $600 including parts and labor at a professional repair shop.

9. Can a bad wastegate control actuator cause other OBDII codes to appear in an Acura?

- Yes, a malfunctioning wastegate control actuator can lead to other related OBDII codes such as P0045 or P0047 due to the interconnected nature of the turbocharger system.

10. Are there any preventive maintenance tips to avoid OBDII code P0046 in an Acura?

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