P1200 – Boost Pressure Too Low (BMW)

Description

P1200 BMW indicates the boost pressure is lower than the ECU target.

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Symptoms

  • Poor acceleration
  • Hesitation
  • Low power

Causes

  • Boost leak
  • Wastegate stuck open
  • Weak turbo

Diagnosis

  • Check boost pressure
  • Inspect hoses
  • Test wastegate

Repair

  • Fix boost leaks
  • Repair wastegate
  • Replace turbo