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P0109 - Manifold Absolute Pressure (Map)/Barometric Pressure (BARO) Sensor Intermittent

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2014 Lincoln Navigator, 2014 Lincoln MKZ, 2014 Lincoln MKX, 2014 Lincoln MKT, and 2014 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
P0109 - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR INTERMITTENT

Description:  This DTC sets when the manifold absolute pressure (MAP) sensor signal is intermittent.
Possible Causes: 
  • MAP circuit intermittent open
  • MAP circuit intermittent short to voltage
  • MAP circuit intermittent short to ground
  • Damaged MAP sensor
  • Incorrect harness connections
Diagnostic Aids:  Check the harness and connection.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Explorer 3.5L GTDI,
F-150 3.5L,
Flex 3.5L GTDI,
MKS 3.5L,
MKT 3.5L,
Taurus 3.5L GTDI		 GO to PINPOINT TEST DN: PRESSURE AND TEMPERATURE SENSORS .
All others GO to PINPOINT TEST DM: MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR .
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