P1111 – Airflow Sensor Response Slow (BMW)

Description

P1111 BMW indicates the MAF sensor responds slower than expected.

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Symptoms

  • Hesitation
  • Poor acceleration
  • Rough idle

Causes

  • Sensor wear
  • Contamination
  • Air leak

Diagnosis

  • Check MAF response
  • Inspect intake
  • Scan DME

Repair

  • Clean or replace MAF
  • Fix intake leaks
  • Replace sensor