P1022 – VANOS Solenoid A Stuck (BMW)

Description

P1022 BMW indicates VANOS solenoid A is stuck and not moving as commanded.

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Symptoms

  • Hesitation
  • Poor acceleration
  • Rough idle

Causes

  • Oil sludge
  • Solenoid sticking
  • Mechanical blockage

Diagnosis

  • Check solenoid movement
  • Inspect oil
  • Scan DME

Repair

  • Replace solenoid
  • Change oil
  • Clean oil passages