Shuǐwēn biǎo bùzhǔn, kěnéng shì wēndù chuángǎnqì huài le.
The coolant gauge is off - might be a faulty temperature sensor.
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usage
A direct calque of 'temperature + sensor.' Cars have several: coolant (水温), intake air (进气), exhaust (排气), cabin (车内). A diagnostic code pointing at the 温度传感器 is cheap to fix but causes wild driving behavior until it is.
