Check the Oil Pressure
WARNING: This page is about a different car, the 2003 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Check the oil pressure at the given engine speeds. Carry out the measurement of the oil pressure at a temperature of 80°C.
The oil pressure depends on various factors (engine speed, oil temperature, oil viscosity, degree of contamination of the oil filter).