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DTC Detection 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 (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