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2015 SUBARU IMPREZA
2.0L H4•AWD•CVT•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor499Torque3418Fluid9DTC1115Battery1Maintenance0Recalls2
P3018high severityPowertrain

Variable Valve Lift System Performance Bank 2

on 2015 Subaru Impreza 2.0L H4 · AWD

What this code means

The variable valve lift system on Bank 2 is not meeting performance expectations.

Symptoms

  • Check Engine Light
  • Uneven power between banks
  • Engine vibration at certain RPMs
  • Reduced high-RPM power
  • Valve train noise Bank 2

Common causes

  • Worn valve lift mechanism Bank 2
  • Oil flow restriction Bank 2
  • Control solenoid failure
  • Mechanical wear in rocker assembly
  • Clogged oil passage

Diagnostic steps

  1. Monitor Bank 2 valve lift PID
  2. Check oil pressure at Bank 2 actuator
  3. Command lift change and verify Bank 2 response
  4. Compare Bank 1 vs Bank 2 lift transition timing
  5. Inspect oil passages Bank 2

Repair notes

Replace Bank 2 variable valve lift mechanism.

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