Technical Low oil pressure warning

[PuntoEvoCam]

Hello my oil pressure light recently came on. To try and overcome the issue I have checked the sump feeder wipe was blocked it wasn’t neither was it cracked/damaged in anyway. I have also cleaned the sump and done a full service on the car including new oil, oil filter etc I also put a new oil pressure sensor on it to see if that was the issue but the light and warning is still coming up? Anyone have any ideas what else it could be?

Car is 1.4 8v engine

 

[GrandePunto PL]

A lot of unnecessary steps (probably). First thing to check was the wiring. ECU wants to see a CHANGE after the engine starts.
You can simulate this by doing short-circuit with piece of wire (by yourself, start the engine and go the sensor plug and short it to the "ground").
And check the pressure switch (oil "sensor") with multimeter or test light during engine start.
Finally (really, the very first thing to rule out), measure the oil pressure.