P0102 - Mass Or Volume Air Flow A Circuit Low Input

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

P0102 - MASS OR VOLUME AIR FLOW A CIRCUIT LOW INPUT

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 shorted to GND Intake air leak (near the MAF sensor) A closed throttle indication (throttle position sensor system) Damaged MAF sensor Damaged PCM
Diagnostic Aids:	A MAF V PID (MAF PID) reading less than 0.23 volts during KOER indicates a concern.
Application		Key On Engine Off	Key On Engine Running	Continuous Memory
All		-	refer to PINPOINT TEST DC .	refer to PINPOINT TEST DC .