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Air intakeSeverity Medium: diagnose soon

P0104Mass or Volume Air Flow "A" Circuit Intermittent

What it means

The MAF signal drops out or jumps for short moments.

Symptoms

  • Hesitation or flat spots when accelerating
  • Rough idle or stalling
  • Higher fuel consumption
  • On diesels: limp mode, sometimes black smoke

Common causes

  • Loose terminal or corroded connector
  • Chafed harness
  • Failing MAF sensor

What to check first

  1. Graph MAF while wiggling the harness and tapping the sensor
  2. Check terminal tension
  3. Check for repairs or rubbing points along the harness
Can I drive with P0104? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P0104: questions and answers

What does P0104 mean?

P0104: Mass or Volume Air Flow "A" Circuit Intermittent. The MAF signal drops out or jumps for short moments.

What are the symptoms of P0104?

Hesitation or flat spots when accelerating. Rough idle or stalling. Higher fuel consumption. On diesels: limp mode, sometimes black smoke.

What causes P0104?

Loose terminal or corroded connector. Chafed harness. Failing MAF sensor.

How do you diagnose P0104?

1. Graph MAF while wiggling the harness and tapping the sensor 2. Check terminal tension 3. Check for repairs or rubbing points along the harness

Can I drive with P0104?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.