2003 BMW 325i E46 with engine code P0117, what exactly why I should replace?

Question

I got this code brought up for a good week now. But I'm not sure exactly why I should replace for my BMW. Its obviously a sensor issue, Is it the coolant sensor that needs replacing?

Answer 1

P0117 Engine coolant temperature circuit low input

This is more of the coolant temperature sensor that set this code, You would still need to check the cooling system , for any coolant leaks, and having the proper coolant mix or water to coolant

Answer 2

P0117 BMW - Engine Coolant Temperature Sensor 1 Circuit Low

Read more: https://www.autocodes.com/p0117_bmw.html