What is the impact of the broken sensor?

What is the impact of the broken sensor?
Water temperature sensor is bad - water temperature meter is not normal
Crankshaft position sensor, camshaft position sensor is bad - the car can not start
Intake pressure sensor, intake air temperature sensor ---- injection volume is not normal, may lead to oil truck

rotary on off switch
Knock sensor - is the engine combustion produces knock, damage the engine
Vehicle speed sensor, speed sensor----tachometer or speedometer display fault

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