P1117 – Intake Pressure Too Low (BMW)

Description

P1117 BMW indicates the intake manifold pressure is lower than expected.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration

Causes

  • Intake leak
  • MAP failure
  • Airflow restriction

Diagnosis

  • Check intake system
  • Test MAP sensor
  • Scan DME

Repair

  • Fix intake leaks
  • Replace MAP
  • Repair wiring