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P0104moderate severityPowertrain

Mass Air Flow (MAF) Circuit Intermittent

on 2015 Kia Forte 1.8L I4 · FWD

What this code means

The MAF sensor signal is intermittent, showing erratic readings.

Symptoms

  • Check Engine Light (intermittent)
  • Intermittent stalling
  • Surging
  • Poor driveability

Common causes

  • Loose MAF connector
  • Damaged wiring
  • Intermittent sensor failure
  • Vibration-induced disconnect

Diagnostic steps

  1. Wiggle test on MAF connector
  2. Inspect wiring for chafing
  3. Monitor MAF signal for dropouts
  4. Check connector pins

Repair notes

Repair connector or wiring. Replace sensor if internal failure.

Other Powertrain codes on this vehicle

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