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DTC P0111 [LF]: Notes

DTC P0111 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0111 IAT sensor circuit range/performance problem
DETECTION CONDITION 
  • If the intake air temperature is higher than engine coolant temperature by 18°C {32.4°F} for 1.2 s  with ignition switch on*, the PCM determines that there is a IAT sensor circuit range/performance problem.

    *: Ignition switch on when 6 h or more  has passed since the previous ignition switch off.


Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • MAF/IAT sensor connector or terminals malfunction
  • IAT sensor malfunction
  • PCM connector or terminals malfunction
  • PCM malfunction
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