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Diagnose/P0104
P0104Medium SeverityFuel System

Mass Air Flow Circuit Intermittent

What This Means

The Mass Air Flow (MAF) sensor signal is cutting in and out intermittently. The signal drops or spikes randomly, causing momentary driveability issues.

Common Symptoms

  • Engine stalls or hesitates
  • Rough idle
  • Poor acceleration
  • Decreased fuel economy

Common Causes

  • Dirty or contaminated MAF sensor
  • Damaged MAF sensor wiring
  • Air filter is clogged or improperly installed
  • Vacuum leaks after the MAF sensor
  • Faulty MAF sensor

Estimated Repair Cost

$80 – $400
Parts and labor (varies by vehicle and location)
Difficulty:Easy

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.