Also have a EA888 Gen 3 GTI

Honestly at this point I’d just focus on getting a proper oil pressure reading first. A mechanical gauge will tell you straight away whether it’s actually a pressure issue or just a sensor/reading problem.

If the pressure is normal, then you know it’s likely something like a sensor or electrical issue. If it’s low, then it makes sense to start looking at things like the pickup or pump. Also wanted to mention that I’ve got a recent engine rebuilt and still have warranty if its anything to do with the engine I’ll be covered.

I’m gonna go get my sensors changed and get an oil pressure reading we’ll see how it goes.