[Pressure sensor not working]

I have an expansion connector coming out of my g4+ and I’m using a  genuine link oil pressure sensor and I have connected them the following way.

 

Expansion loom: Ground - Sensor Ground 

Expansion Loom: +5v - Sensor 5V

Expansion loom: analog input 8 - sensor signal 

[Pressure sensor not working]

I am literally having the same issue! when the ignition is on its reading 100KPA and when i turn the engine over its getting 0KPA?