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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P0108: - Manifold Absolute Pressure (Map)/Barometric Pressure (BARO) Sensor High

DTC P0108: - Manifold Absolute Pressure (Map)/Barometric Pressure (BARO) Sensor High

DTC P0108: - MANIFOLD ABSOLUTE PRESSURE (MAP)/BAROMETRIC PRESSURE (BARO) SENSOR HIGH

Description:  Sensor operating voltage is greater than 4.96 volts. As a result it failed above the maximum allowable calibrated parameter.
Possible Causes: 
  • VREF shorted to VPWR
  • MAP signal shorted to VPWR
  • VREF should be less than 6.0 volts
  • Open circuit
Diagnostic Aids:  The VREF voltage should be between 4.0 and 6.0 volts.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DM .