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Diagnose/P0027
P0027Medium SeverityEngine

Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 1)

What This Means

The exhaust valve control solenoid on bank 1 is operating outside its expected range. This affects the variable valve lift system for exhaust valves.

Common Symptoms

  • Rough idle
  • Power loss
  • Increased emissions
  • Check engine light on

Common Causes

  • Faulty exhaust valve solenoid
  • Contaminated oil
  • Wiring fault
  • Oil passage blockage
  • Mechanical valve issue

Estimated Repair Cost

$150 – $700
Parts and labor (varies by vehicle and location)
Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.