P1100 – MAF Sensor Circuit Fault (BMW)

Description

P1100 BMW indicates a fault in the MAF sensor electrical circuit.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration

Causes

  • Wiring damage
  • Connector corrosion
  • MAF sensor failure

Diagnosis

  • Check wiring
  • Inspect connector
  • Test MAF signal

Repair

  • Repair wiring
  • Clean connector
  • Replace MAF sensor