P0105 – MAP Sensor Circuit Malfunction

Description

The ECM detects an incorrect or implausible signal from the MAP sensor.

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Symptoms

  • Poor acceleration
  • Hesitation
  • Rough idle
  • Black smoke

Causes

  • Faulty MAP sensor
  • Vacuum leaks
  • Wiring issues
  • ECM fault

Diagnosis

  • Monitor MAP data
  • Inspect vacuum lines
  • Check wiring

Repair

  • Replace MAP sensor
  • Fix vacuum leaks
  • Repair wiring