FixVault

DTC Detection Logic

DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause
P0116 Engine coolant temperature (ECT) sensor circuit range/performance The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor and FTT sensor, CVT fluid temperature 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