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OBD Code P0086

Exhaust Valve Control Solenoid Circuit High Bank 2

CodeP0086
DescriptionExhaust Valve Control Solenoid Circuit High Bank 2
Possible CausesShort to power|Faulty solenoid
SymptomsPoor performance|Rough idle
SystemFuel System

What Does P0086 Mean?

Exhaust Valve Control Solenoid Circuit High Bank 2. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the fuel system.

Code Breakdown

P = Powertrain code

0 = Generic (SAE standard)

How to Fix P0086

Follow these diagnostic steps to identify and resolve the issue. Always start with the simplest checks before moving to more involved repairs.

  1. Check engine oil level and condition — valve control systems are oil-dependent.
  2. Inspect the valve control solenoid and its connector.
  3. Test the solenoid by applying 12V — it should click.
  4. Clean or replace the solenoid screen if clogged with sludge.
  5. Check for timing chain stretch if the valve timing is significantly off.
  6. Clear codes and verify valve timing with a scan tool.

Note: These are general diagnostic guidelines. Some vehicles may have model-specific procedures. Always consult your vehicle's service manual for exact specifications and torque values. If you are not comfortable performing these steps, visit a qualified mechanic.

Frequently Asked Questions

Is P0086 serious?

The severity depends on the underlying cause. Some triggers for P0086 are minor (like a loose gas cap), while others may indicate a more significant problem. We recommend having the code diagnosed with a proper scan tool to determine the exact cause before deciding on urgency.

Can I clear P0086 myself?

You can clear any OBD-II code with a code scanner or by disconnecting the battery for 15-30 minutes. However, clearing the code without fixing the underlying problem will cause it to return, usually within one or two drive cycles. If the code triggered the check engine light, the light will come back on. Fix the root cause first, then clear the code.

How much does it cost to fix P0086?

Repair costs vary widely depending on the root cause. Some fixes are free (like tightening a gas cap) while others can cost several hundred dollars (like replacing a catalytic converter or oxygen sensor). A proper diagnosis with a professional scan tool, not just reading the code, is the first step to getting an accurate repair estimate. Many auto parts stores offer free code reading, but a thorough diagnosis usually requires a mechanic.

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