Getting oil and water alerts on "autocheck screen"

[Anagonda]

My car was in garage for about 2-3 months, before I had a problem that I got red screen with waves etc(cooling water?) on autocheck screen. She didn't loose her water and I didn't find anything that would make this. Cooling temp is fine(about 90c)

Now I got the car running again and now I get oil warning too(a can and a drop?). I changed my turbo to a garret gt-series with oil restrictor. I got high oil pressure(with the stock oil gauge), about 3.7-4 it shows when warm. She doesn't loose oil or burn it.

So what is wrong with her? Can it warn with too high oil pressure? Why does the water warning come? It's getting annoying coz I got hole time some warnings on the screen. And that ******* "peeep"-sound it makes every few seconds.
Nothing when the engine is cold. So I can only drive a few mins in peace.

[murat]

cooling water could be because of the sensor or the connector
try cleaning the connector with contact cleaner, i had this issue 2 weeks ago

[porkkis]

If the engine was out they've probably wired the oil pressure sensors wrong. And that's not oil temp warning but pressure!

Water temp alarm is triggered by two signals, MFTS and level sensor at the expansion tank.