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Fault code: P0 1 17

Engine Coolant Temperature (ECT) Sensor 1 Circuit Low

Engine coolant temperature sensor 1 circuit low.

Category: fuel or air+detailed meaning: Engine coolant temperature (ECT) sensor transmits the temperature of engine coolant to electronic control unit (ECU) in the form of electrical signal through the principle of thermistor, which serves as the basis for correcting fuel injection and ignition. This fault code+will appear if ECU detects that the engine coolant temperature (ECT) sensor signal is lower than the minimum value of self-test (0.2 volts or 12 1 Celsius). The fault causes include sensor signal circuit short circuit to ground, sensor fault, electronic control module (PCM or ECM) fault, etc.