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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 753 (Engine Controls - Powertrain DTC Charts & Descriptions - CNG, Flex-Fuel & Gasoline) >> Diagnostic Trouble Code (DTC) Charts >> P0102: Mass Air Flow (MAF) Circuit Low Input

P0102: Mass Air Flow (MAF) Circuit Low Input

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P0102 - MASS AIR FLOW (MAF) CIRCUIT LOW INPUT

Description:  The MAF sensor circuit is monitored by the PCM for low air flow (or voltage) input through the comprehensive component monitor (CCM). If during key ON, engine running 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.
  • Damaged PCM.
Diagnostic Aids:  A MAF V PID (MAF PID) reading less than 0.23 volt in continuous memory or key ON and engine running indicates a hard fault.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DC: MASS AIR FLOW SENSOR Step 4.
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