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Home >> Infiniti >> 2013 >> EX37 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0152 >> DTC P0116: ECT Sensor >> DTC Logic >> DTC Detection Logic >> Notes
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DTC Detection Logic: Notes

NOTE: If DTC P0116 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117, P0118. Refer to "DTC LOGIC ".
DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause
P0116 ECT SEN/CIRC [Engine coolant temperature (ECT) sensor circuit range/performance] The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the voltage signal of the ECT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.
  • Harness or connectors (High or low resistance in the ECT sensor circuit)
  • ECT sensor