P1110 – Airflow Sensor Heater Fault (BMW)

Description

P1110 BMW indicates a fault in the MAF sensor heater circuit.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor cold start

Causes

  • Heater failure
  • Wiring fault
  • Connector corrosion

Diagnosis

  • Check heater resistance
  • Inspect wiring
  • Test connector

Repair

  • Replace MAF
  • Repair wiring
  • Clean connector