Volvo All Engines (2017 Emissions) Fault Code: P052012 PID: EMS Engine Oil Pressure Sensor/Switch “A”

Circuit description
The Engine Oil Pressure Sensor is used to detect engine lubrication system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine oil pressure causes the sensor’s diaphragm to deflect and produce an electrical signal proportional to the pressure. The diaphragm deflection signal is amplified in the sensor.
The sensor’s signal is monitored by the Engine Control Module (ECM).
The engine control module (ECM) will set a diagnostic trouble code (DTC) and derate the engine to avoid engine damage if the sensor signal is not within predetermined limits, or the signal is not rational.

Conditions for diagnostic trouble code (DTC)
The voltage at pin A14.EB:11 is more than 4.85 V

Observable symptoms
The engine oil pressure (EOP) gauge shows 0 when the engine is running

Probable cause
1) Connector
2) Wiring harness
3) Engine oil pressure (EOP) sensor
4) Engine Control Module (ECM)