The light is a red light right at the 0 mark of the 123 bar indicator. Sometimes i can tap the brake and the light will come back up a little. Could it possibly be the oil pump..if so can i replace it myself. I work on ALOT of cars etc. Its really weird because the engine seems to be running great. Whenever i check the oil it looks fine. All i can hear in the engine is that pesky tapping noise comming from a lifter on the front cylinder i cant seem to quiet. Can i get that adjusted? The lifter ticking that is. I REALLLLY app. ur help.