Just like the tittle says my 99 impreza L oil light keeps coming on every time im driving.. My oil lvl is good, trans oil lvl good, everything else is cherry, it doesn't overheat. Can't seem to diagnose the problem..could it be that my oil pump is failing? Or is it because of oil pressure sensor is being stupid? Help me out guys. Thanks and mahalos in advance..

 

When that happened on my Legacy, I just changed out my oil pressure sending unit directly below the alternator and it went away...

 

Thanks will try replacing it tomorrow