Oil Pressure Sensor 1.6L CAYC

Hello,

I measured an oil pressure of 1.7 bar in the aforementioned engine at 2000 RPM. According to the manufacturer's specifications, this is too low. Even when increasing the engine speed, the pressure does not change significantly. The measurement was also taken while driving.
I assume that even a cheap pressure gauge will display the correct value. At the beginning of the problem, there was a significant oil leak at the oil filter housing. This was initially replaced. Subsequently, the oil pump, including the suction strainer, was renewed (all original equipment parts).
Unfortunately, there's been no improvement. The timing belt for the oil pump drive was also okay. Bearing noises are not currently present.
Does anyone have any other ideas?