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My check engine light came on yesterday. I went to Advance Auto the checked code it was P2181. Engine coolant level is good, water pump seems OK and the temp is not rising?

Should I go ahead and change thermostat or will it be OK or is it going to go out on me. I commute every day on major highway and don't want to overheat while driving.

Any suggestions would be appreciated

Vehicle: 2008 Volkswagen Passat

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P2181 Engine coolant temperature sesnor

This is engine coolant temperature is too low, When the temperature is too low the vehicle will have a rough idle, not only should the thermostat be replaced you will also need a temperature sensor.
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P2181 Volkswagen Code - Cooling System Performance
Read more: https://www.autocodes.com/p2181_volkswagen.html

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