I have an Audi A4 (B8) saloon. I have a ''Low oil Pressure Switch Office Engine'' message every time the engine reaches 90 degrees celsius or when the car is slowing down.
I have changed the following:
1. Oil pump
2. Oil level sensor
3. Oil pressure switches (the blue and brown)
4. Conrod bearings
5. Oil filter (several)
6. Swapped cylinder head
7. Camshaft Timing Control Solenoid valve
8. Cam bridge

Unfortunately, the error message keeps propping up. I am at my wit's end. Does anybody have any pointers as to what I should do next?