P1112 – MAP Sensor Circuit Fault (BMW)

Description

P1112 BMW indicates a fault in the MAP sensor electrical circuit.

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Symptoms

  • Rough idle
  • Hesitation
  • Reduced power

Causes

  • Wiring damage
  • Connector corrosion
  • MAP sensor failure

Diagnosis

  • Check wiring
  • Inspect connector
  • Test MAP signal

Repair

  • Repair wiring
  • Clean connector
  • Replace MAP sensor