Partner High Pressure Pump Issue

Sounds like a high pressure pump issue alright! Those symptoms, especially with the check engine light and stalling, point right to fueling problems. Any rough idling or misfires along with it?

Rough idle yes. Misfires occasionally. High pressure pump, huh? What's the worst case?

Worst case? Pump failure. Can lead to all sorts of fuel injection problems, maybe even damage injectors. Get it checked ASAP at a workshop. I bet your diagnostic tool throws a code related to fuel pressure or regulator.

You were right about the pump. Defective regulator. Cost 1510€ to repair. Thanks for the help.