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Home >> Mazda >> 2009 >> MX-5 Miata Touring, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System LF 2.0L) >> DTC P0116 [LF] >> Notes

DTC P0116 [LF]: Notes

DTC P0116 (LF) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P0116 Engine coolant temperature circuit range/performance
DETECTION CONDITION 
  • The PCM monitors the maximum value and minimum value of engine coolant temperature when the engine is started and 5 min have been passed after leaving the vehicle 6 h or more  . If difference between maximum and minimum values of engine coolant temperature is below 6°C {10.8°F}  the PCM determines that there is an ECT circuit range/performance problem.

Diagnostic support note 
  • This is a continuous monitor (engine cooling system).
  • The MIL illuminates 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 
  • ECT sensor connector or terminals malfunction
  • PCM connector or terminals malfunction
  • ECT sensor malfunction
  • Thermostat malfunction
  • PCM malfunction