Check the wiring to the sensor and replace as needed.ĭon’t assume your engine oil level is low without physically checking the dipstick. Whenever an oil pressure sensor is not working properly in a modern car, it will cause the gauge to have strange readings or it will sit on full or zero. If you are driving a modern vehicle, then your oil pressure gauge is probably electronic and transmits an electronic signal to get the reading. Whenever the oil levels are normal but the gauge is showing zero, this means the oil pressure sensor needs to be replaced because it is faulty or there is some type of connection issue. If you are driving an older vehicle, then it likely has a mechanical gauge that calculates the oil pressure. Related: Common Symptoms of Low Engine Oil #2 – Wrong Reading Shows on the Oil Pressure Gauge If it isn’t, then it is likely you have a faulty oil pressure sensor and you need to replace it right away. In order to determine if this is a real warning or not, you should manually check your oil level to see if it is low. This could cause a driver to panic because they’ll believe that their oil levels are low, which would end up damaging the engine if it were true. Sometimes if the oil pressure sensor is not working properly, there will be blinking from the low oil light on the dashboard. Below are the three most typical signs of a faulty oil pressure switch or sensor: #1 – Repeated Blinking from the Oil Pressure Light It could also cause an inaccurate reading to be given from the oil pressure gauge. If there is a problem with the oil pressure sensor, then this will usually activate the engine oil pressure light. Symptoms of a Bad Oil Pressure Switch or Sensor If the vehicle has an electronic control module (almost all do), then the oil pressure switch will send this information to the module where it can be calculated.Īfter it is calculated, the information gets sent to the combination meter or instrument panel so that the engine oil pressure warning light or the oil pressure gauge can be activated. Click Here to chat online with a verified mechanic who will answer your questions.