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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 974 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0102 - Mass Or Volume Air Flow A Circuit Low

P0102 - Mass Or Volume Air Flow A Circuit Low

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. 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 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 [TP] sensor system)
  • Damaged MAF sensor
Diagnostic Aids:  A MAF PID reading less than 0.23 volt in continuous memory or KOER indicates a hard fault.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   - refer to PINPOINT TEST DC . refer to PINPOINT TEST DC .
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