Power steering pump leaks are very common, the pump can leak externaly through an O-ring that connects the Tank to the pump, this part is not available OEM, an O-ring with ID15.54 OD20.78 or around that should do the job.
Or an internal leak in the form of fluid exchange between engine oil and PS fluid which will either cause a low PS fluid level or an overfill, caused by the shaft seal PN12807425.
Last is an engine oil leak from the seal between the pump and the engine PN12801788.
Enjoy the video.
