Ford P0523 OBD-II Trouble Code Definition: P0523 Engine Oil Pressure Sensor/Switch Circuit High Voltage P0523 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0523 Engine Oil Pressure Sensor/Switch High Voltage What does the code mean? OBD-ii Code P0523 definition: The PCM continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM […]