Getting codes p316a p1434 and p1449

Question

I'm getting codes p316a, p1434 and p1449 on my BMW 335i 2008

Answer 1

P316A Coolant temperature sensor

P1449 DMTL ( diagnostic module tank leakage ) pump current

P1434 DMTL tank leakage

How the coolant temperature , and is the cooling fan always running. P316A can also be set when the cooling pump is non operational. As for the DMTL, you have 2 code both reinforce that the DMTL is non operational