Oil sensor light on if parked at decline

[mi21]

Hoping someone has come across something similar before, so here goes!

I have a 2.0 TDI A3 (8P chasis) and it had a yellow "oil sensor" warning saying "sensor deffective" come up a while back, I've had the sensor replaced with a genuine VWAG part, and the warning is still on intemittently. There's no pressure warnings and I frequently check the levels so I assumed there was a wiring issue until today.

I've discovered that if the car is parked on a decline (nose facing down a hill) then the warning light will be on when I come back to the car. However if its parked on an incline (nose facing up the hill) - even if its just a small 3/4% incline, then the light doesn't come on, and it stays off the entire time I'm driving.

Anyone have any ideas? Oil levels are all spot on!

 

[Chris-P]

I'd get your oil pickup pipe checked to see if it's clogged up with sludge.

When was the last time you had an oil change?

 

[SootySport]

The oil sensor screwed to the bottom of the sump is for measuring oil quality, not the oil level. You either have old oil in there or the wrong grade. Parking on an incline may have something to do with it but not at 3 or 4 degrees.