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DTC P0116, P0117, P0118: ENGINE COOLANT TEMPERATURE (ECT) SENSOR Hyundai Tiburon I facelift

Note. Engine Coolant Temperature (ECT) sensor is located in the cylinder head next to upper radiator hose. ECT sensor is a variable resistor. When engine coolant temperature is low, sensor resistance is high. When engine coolant temperature is high, sensor resistance is low. ECM use ECT sensor voltage signal to control fuel injector pulse width and ignition timing.