The mass air flow sensor is reporting a higher than expected voltage.
Informational only. Consult a qualified mechanic.
Inspect wiring for shorts and replace MAF sensor if needed.
The P0103 OBD-II diagnostic trouble code (DTC) indicates: maf sensor high input. This is a medium-severity powertrain code that your vehicle's onboard diagnostics system triggers when the mass air flow sensor is reporting a higher than expected voltage. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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