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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 668 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0103 - Mass Or Volume Air Flow A Circuit High

P0103 - Mass Or Volume Air Flow A Circuit High

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P0103 - MASS OR VOLUME AIR FLOW A CIRCUIT HIGH

Description:  The mass air flow (MAF) sensor circuit is monitored by the powertrain control module (PCM) for high air flow (or voltage) input through the comprehensive component monitor (CCM). If during key on, engine off (KOEO), or key on, engine running (KOER), the air flow (or voltage) changes above a maximum calibrated limit, the test fails.
Possible Causes: 
  • MAF sensor screen is blocked
  • MAF circuit shorted to voltage
  • Damaged MAF sensor
Diagnostic Aids:  A MAF V PID (MAF PID) reading greater than 4.6 volts during KOER indicates a hard fault.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST DC .
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