When you start noticing the check lights in your oil pressure gauge, this means your oil pressure drops at 10 psi when the engine is idling. You have to be thankful for a properly working oil pressure switch, which monitors oil pressure levels in psi units. At work, the oil pressure has to be above the standard switching pressure set by the vehicle manufacturer, which ranges from 18 to 23 psi or 0.2 to 0.55 bar. If the pressure is lower than that, the check light will notify you. The oil pressure switch in your automobile sends accurate oil pressure measurements to your engine computer. This device delivers signals—which are set on certain parameters—to the engine computer, where the data is processed and used. When the signals show that the oil pressure isn't normal, the engine management system will check on the amount of oil circulating in the system. If the oil pressure switch did its job well, you'll be notified through your check gauge. When it fails, the engine computer will have to do some guess work, which could lead to faulty engine performance. You won't like it when the oil pressure switch fails. Erroneous check lights can lead to several problems, including sudden overheats. Now, who would want that? So, have your damaged switch replaced with a new unit as soon as possible. Car Stuff has the exact switch that will surely match the requirements of your vehicle. Check out our catalog today!