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P1103 - Mass Air Flow Sensor In Range But Higher Than Expected

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P1103 - MASS AIR FLOW SENSOR IN RANGE BUT HIGHER THAN EXPECTED

Description:  This DTC sets when the air flow is greater than the calibrated threshold based on the engine speed and torque.
Possible Causes: 
  • Damaged mass air flow (MAF) sensor
  • Leaks or restrictions in the intake air system and charge air cooler (CAC)
Diagnostic Aids:  The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power.
When the RPM is 600 RPM to 3500 RPM the air flow should be less than 300 to 1150, air flow greater than the maximum threshold value indicates a concern.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST J .