Powertrain
generic / SAE
P0104
Mass or Volume Air Flow Circuit Intermittent
The ECU detects intermittent signal dropouts or noise on the mass air flow (MAF) sensor circuit. The fault is not constantly present, suggesting a loose connection, intermittent wiring break, or a failing sensor under specific conditions (vibration, temperature).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 04
Possible causes
- MAF connector loose or corroded high
- Wiring chafed against engine components medium
- MAF sensor failing intermittently medium
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 40–350 €
- Estimated time: 0.5–2 h
- Component: mass air flow sensor
- Component: maf connector
- Component: maf wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012