Why does the oil pressure sensor light is lit- the causes of failure

The engine could be damaged severely if the loss of oil pressure. Possible causes, and there is the oil level sensor, if goes warning light oil pressure, and the electronic control has a special pressure sensor that mounts, it causes a flood of liquid to the compressor, the oil fails if the compressor does not start, and the causes of engine oil pressure is high and low, engine failure: change oil and filter. Check the performance of the injector. Avoid excessive idling.