P0102 - Mass Or Volume Air Flow A Circuit Low

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

P0102 - MASS OR VOLUME AIR FLOW A CIRCUIT LOW

Description:	The mass air flow (MAF) sensor circuit is monitored by the powertrain control module (PCM) for low voltage input through the comprehensive component monitor (CCM). If during key on engine running (KOER) the voltage changes below a minimum calibrated limit, the DTC is set.
Possible Causes:	Damaged MAF sensor MAF sensor disconnected MAF circuit open to PCM VPWR open to MAF sensor PWR GND open to the MAF sensor MAF RTN circuit open to PCM MAF circuit shorted to GND Intake air leak (near the MAF sensor)
Diagnostic Aids:	A MAF_Hz PID (MAF PID) reading less than 4 kHz during KOER at idle indicates a concern is present.
Application		Key On Engine Off	Key On Engine Running	Continuous Memory
All		refer to PINPOINT TEST J .