P0109 – MAP Sensor Intermittent

Description

The ECM detects an intermittent MAP sensor signal.

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Symptoms

  • Hesitation
  • Surging
  • Rough idle

Causes

  • Loose connector
  • Wiring issues
  • Faulty MAP sensor

Diagnosis

  • Inspect connector
  • Monitor MAP data
  • Check wiring

Repair

  • Repair wiring
  • Replace MAP sensor