Error code

OBD2 P0027

OBD2P0027
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Exhaust Valve Control Solenoid Circuit Range/Performance.

Severity

moderateCan drive, but symptoms may affect performance and fuel efficiency.

Summary

P0027 indicates an issue with the exhaust valve control solenoid circuit on bank 1 of the engine, which affects variable valve timing or camshaft system performance.

Symptoms

  • Illuminated check engine light
  • Rough idle
  • Reduced engine power at certain speeds
  • Increased fuel consumption

Common Causes

  • Low engine oil level
  • Incorrect or unsuitable lubricating oil
  • Open or short circuits in associated wiring
  • Corroded electrical connectors
  • Loss of ground contact
  • Defective actuators or control valves/mechanisms (rare)
  • Failed PCM (very rare)

Diagnosis

  1. Check engine oil level and type; correct if necessary.
  2. Perform an oil pressure test to ensure it is within specification.
  3. Inspect all related wiring and connectors for defects.
  4. Test actuators and control valves/mechanisms manually or as per manual instructions.
  5. Consider performing an engine flush if internal passages are suspected of being blocked.

Fixes

  • Replace faulty solenoid, wiring/connectors, or actuators as needed.

FAQ

What does P0027 mean?

P0027 indicates a problem with the exhaust valve control solenoid circuit on bank 1 of the engine, affecting variable valve timing or camshaft system performance.

How do I fix P0027?

Fixes include checking and correcting oil levels and type, inspecting wiring/connectors for defects, testing actuators and control valves/mechanisms manually or as per manual instructions, and performing an engine flush if necessary.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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