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2002 BMW 525I
2.5L I6 M54•RWD•AUTOMATIC•gas•M54B25
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor497Torque2182Fluid8DTC1267Battery1Maintenance0Recalls4
P0101moderate severityPowertrain

Mass Air Flow (MAF) Circuit Range/Performance

on 2002 BMW 525i 2.5L I6 M54 · RWD

What this code means

The MAF sensor reading is outside the expected range for the current engine operating conditions.

Symptoms

  • Check Engine Light
  • Poor fuel economy
  • Hesitation
  • Rough idle
  • Stalling

Common causes

  • Dirty MAF sensor
  • Intake air leak
  • Restricted air filter
  • Faulty MAF sensor
  • Exhaust leak near O2 sensor

Diagnostic steps

  1. Compare MAF reading to spec at idle and 2500 RPM
  2. Check for vacuum leaks
  3. Inspect air filter
  4. Clean MAF sensor
  5. Check for exhaust leaks

Repair notes

Clean or replace MAF sensor. Repair any intake leaks.

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