P1205 – Wastegate Control Fault (BMW)

Description

P1205 BMW indicates improper wastegate control.

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Symptoms

  • Poor acceleration
  • Hesitation
  • Overboost/underboost

Causes

  • Vacuum leak
  • Actuator failure
  • Control solenoid fault

Diagnosis

  • Check wastegate movement
  • Inspect vacuum system
  • Test solenoid

Repair

  • Repair vacuum leaks
  • Replace solenoid
  • Repair actuator

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