Oil pressure light flashes on an ep6c engine

[Tudy]

Good day everon lately I have been getting oil pressure light on my dashboard I ran a diagnosis and I was hit multiple codes which one f them was oil pump solenoid valve which I tested the resistance with a multimeter and it was reading 20-30ohms which was very high I swapped it with a new one which it resistance was around 12ohms, then I tried to change the oil pressure sensor which I bought a new one I replaced the connector and the oil sensor but then it started giving me multiple fault codes , I'm confused to I might not have connected the right wire to the right allocated pin number I'm just frustrated about it
I'll share the codes that appeared

[mickthemaverick]

Please include the descriptions of the codes as well as the codes themseves

[xantia_v6]

Also tell us when (what conditions) the warning light flashes, and has that behaviour changed with the work that you have done?

[Tudy]

Good day sorry I have been off for a while now so the fault codes are
P15A0 lubrication system
Intermittent
P15A3 oil pressure regulation solenoid valve control
Permanent
So I changed the solenoid valve which clears the code. but when I changed the oil pressure switch with a new one the light keeps on coming on, but when I install the faulty one which i removed I found oil in the pins it doesn’t show the light. I cleaned it with a contact cleaner so few days ago i wanted to change the oil pressure switch and the connector with a new one cause obviously the one that’s leaking oil has failed which it has 3 pins but I don’t know if pin1 is the 5v supply pin 2 is ground or the signal out put

My VIN is VF3**************[VIN obfuscated, can be read by forum staff]