P1118 – Intake Pressure Too High (BMW)

Description

P1118 BMW indicates the intake manifold pressure is higher than expected.

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Symptoms

  • Hesitation
  • Reduced power
  • Rough idle

Causes

  • Sensor failure
  • Boost leak
  • Wiring issue

Diagnosis

  • Check MAP readings
  • Inspect boost system
  • Check wiring

Repair

  • Replace MAP
  • Fix boost leaks
  • Repair wiring