DTC P0102: Mass Or Volume Air Flow A Circuit Low

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

DTC 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 air flow (or voltage) input through the comprehensive component monitor (CCM). If during key on, engine running (KOER) the air flow (or voltage) changes below a minimum calibrated limit, the test fails.
Possible Causes:	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 short to ground Intake air leak (near the MAF sensor) A closed throttle indication (throttle position [TP] sensor system) Damaged MAF sensor
Diagnostic Aids:	A MAF PID reading less than 0.24 volt in continuous memory or KOER indicates a hard fault.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	GO to PINPOINT TEST DC .	GO to PINPOINT TEST DC .