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On Board Diagnosis Logic

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION - POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0125
0125		 Insufficient engine coolant temperature for closed loop fuel control
  • Voltage sent to ECM from the sensor is not practical, even when some time has passed after starting the engine.
  • Engine coolant temperature is insufficient for closed loop fuel control.
  • Harness or connectors

    (High resistance in the circuit)

  • Engine coolant temperature sensor
  • Thermostat
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