Oil level indicator

[elav]

Hello, I have a '98 Boxster and the dash display has always showed the oil level. I recently got the car back from having it repainted (which is a long story) but now when I start up the car, I see the instrument cluster start to show the oil level for a split second and then goes blank. How should I go about debugging this? If the sensor connector comes loose, is this the behavior? Thanks in advance - I did a search but didn't find anything specific to this.