Powertrain
generic / SAE
P0103
Mass or Volume Air Flow Circuit High Input
The MAF sensor reports an air flow value above the plausible maximum for current engine speed and load. Often indicates a sensor that is failing in a way that produces excess output, or a short to supply voltage in the signal path.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 03
Possible causes
- MAF sensor failed high
- Signal wire shorted to supply voltage medium
- Connector pins corroded - high contact resistance low
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–300 €
- Estimated time: 0.3–1.5 h
- Component: mass air flow sensor
- Component: mass air flow sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012