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Engine-Codes – Generic – P0086

P0086 Code - Exhaust Valve Control Solenoid Circuit High Bank 2

Quick Answer

The P0086 code indicates a problem with the exhaust valve control solenoid circuit on bank 2 of the engine. Common causes include Faulty Solenoid: The exhaust valve control solenoid itself may be malfunctioning, causing the high voltage reading, Damaged Wiring or Connectors: Issues with the wiring or connectors leading to the solenoid can disrupt the electrical signal and trigger the code, ECM Malfunction: Problems with the engine control module can also lead to errors in regulating the exhaust valve control solenoid. 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
P0086 indicates Exhaust Valve Control Solenoid Circuit High Bank 2.
Common causes
Common causes include Faulty Solenoid: The exhaust valve control solenoid itself may be malfunctioning, causing the high voltage reading, Damaged Wiring or Connectors: Issues with the wiring or connectors leading to the solenoid can disrupt the electrical signal and trigger the code, ECM Malfunction: Problems with the engine control module can also lead to errors in regulating the exhaust valve control solenoid.
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 P0086 Description

The P0086 code indicates a problem with the exhaust valve control solenoid circuit on bank 2 of the engine. The exhaust valve control solenoid is responsible for regulating the flow of exhaust gases through the engine, which is crucial for proper engine performance and emissions control. When this circuit is reading high voltage, it means that there is an issue with the electrical signal being sent to the solenoid, leading to potential malfunctions in the exhaust system.

OBDII Code P0086 - Exhaust Valve Control Solenoid Circuit High Bank 2
P0086 Code - Exhaust Valve Control Solenoid Circuit High Bank 2

Common Causes of P0086

  1. Faulty Solenoid: The exhaust valve control solenoid itself may be malfunctioning, causing the high voltage reading.
  2. Damaged Wiring or Connectors: Issues with the wiring or connectors leading to the solenoid can disrupt the electrical signal and trigger the code.
  3. ECM Malfunction: Problems with the engine control module can also lead to errors in regulating the exhaust valve control solenoid.
  4. Short Circuits: Short circuits in the wiring harness can cause electrical issues and trigger the code.
  5. Environmental Factors: Exposure to extreme temperatures, moisture, or contaminants can also contribute to circuit high voltage readings.

Symptoms of P0086

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in power and acceleration due to improper exhaust gas regulation.
  3. Rough Idling: The engine may idle roughly or inconsistently, causing vibrations and noise.
  4. Increased Emissions: The vehicle may fail emissions tests or produce higher levels of pollutants due to improper exhaust gas flow.
  5. Engine Stalling: In severe cases, the engine may stall or have difficulty starting, indicating a serious issue with the exhaust valve control solenoid circuit.

How to Fix P0086

  1. Diagnose the Issue: Use a diagnostic scanner to read the code and identify the specific cause of the circuit high voltage reading.
  2. Inspect Wiring and Connectors: Check the wiring harness and connectors for any damage, corrosion, or loose connections that may be affecting the solenoid circuit.
  3. Test the Solenoid: Test the exhaust valve control solenoid to determine if it is functioning correctly or needs replacement.
  4. Replace Faulty Components: Replace any faulty solenoids, wiring, connectors, or the ECM if necessary to resolve the issue.
  5. Clear Codes and Test Drive: After repairs are made, clear the diagnostic codes, and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0086

The cost of repairing a P0086 code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the parts for this repair can range from $100 to $300, while labor costs can add another $100 to $200. This estimate does not include diagnostic fees, taxes, or any additional parts or services that may be required. It's recommended to consult a professional mechanic for a more accurate cost estimate based on your vehicle's specific needs and location.

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Code P0086 Information for Specific Makes

  • P0086 KIA — Exhaust Valve Control Solenoid Circuit High Bank 2
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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