Hello, have installed a replacement engine for a month MKB: ABT and for a week the oil lamp has been shining. Oil pressure switches are both exchanged and when I wanted to drive to the friendly to have the oil pressure measured. it went out on the way there. Well let measured trozdem and 2.5 bar in idle and then rising with the speed. for 4 days the lamp was no longer on and I have already driven around a bit and at the same time suddenly it started to shine again, in the once again, it was completely shining, until the front door. It is also not cable break, because if the cable is off from the 0.3 bar switch, it does not light up even when ignition is on. what could that be?