What are the symptoms of a faulty Cruze temperature sensor?

[DeClara]

Thermostat fails to open, the temperature gauge displays the high-temperature zone, the engine temperature is high, but the coolant temperature in the radiator is not high, and touching the radiator by hand does not feel hot. If the car thermostat does not close, the water temperature will rise slowly, especially in winter, where after more than ten minutes, the water temperature remains in the low-temperature zone, and the idle speed is high. Thermostat: The thermostat automatically adjusts the amount of water entering the radiator based on the coolant temperature, changing the water circulation range to regulate the cooling system's heat dissipation capacity, ensuring the engine operates within the appropriate temperature range. The thermostat must maintain good technical condition; otherwise, it will seriously affect the normal operation of the engine. Precautions: If the main valve of the thermostat opens too late, it will cause the engine to overheat. If the main valve opens too early, it prolongs the engine warm-up time, resulting in the engine temperature being too low. During routine maintenance of the cooling system, attention should be paid to cleaning scale and dirt on the thermostat. If damage is found, it should be replaced promptly.