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DTC P0108 [LF]: Notes

DTC P0108 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0108 MAP sensor circuit high input
DETECTION CONDITION 
  • The PCM monitors the input voltage from the MAP sensor when intake air temperature is above -10°C {14°F}.  If input the voltage is above 4.92 V  , the PCM determines that the MAP sensor circuit has a malfunction.

    MONITORING CONDITIONS 

    • Calculated load: 13-32% 

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • MAP sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between MAP sensor terminal D and PCM terminal 2AG
  • MAP sensor power supply circuit and signal circuit are shorted to each other
  • Open circuit in wiring harness between MAP sensor terminal D and PCM terminal 2AG
  • Open circuit in wiring harness between MAP sensor terminal A and PCM terminal 2AV
  • MAP sensor malfunction
  • PCM malfunction
G06149962Courtesy of MAZDA MOTORS CORP.
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