The Mass Air Flow (MAF) sensor is reporting higher-than-expected airflow. This can cause the engine to run lean as the computer adjusts fuel based on the incorrect reading.
Find certified mechanics near you who can diagnose and repair P0103.
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.