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Home >> Nissan-Datsun >> 2006 >> Quest Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 To P0153 >> DTC P0125 ECT Sensor >> On Board Diagnosis Logic

On Board Diagnosis Logic

DTC CHART

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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