P314A Inverter Coolant Pump Speed Signal

Please I need help on how to solve this problem.
I have scanned the car and it give me P314a.

But the thing is this problem is not always present. I may drive for 2 days I will not have it. And when it comes on, it difficult to go out.

When this code comes On, my radiator fan start blowing very fast and loud. Check engine light comes on and check hybrid system and triangle of death comes one too.

I thought it could be the invertet water pump. Now I have changed the inverter coolant pump still the problem still do come one.

But there is some thing I noticed that make this problem come on.
I noticed that any time I wash the car or rain falls this problem comes on immediately.

I may want to go out with the car. Then starts and test drive it and I would not see the issue at all but once I finish washing the car the issue starts immediately I start the car. Or once it rains the issue starts immediately .
So it seen to be that there is a place water does enter to cause this issue.
Please who know where water enters to cause this issue because I'm 100% sure that it's water that is causing This Issue?