Volvo All Engines (2013 Emissions) Fault Code: P25AE00 PID: EMS Piston Cooling Oil Pressure Too Low

The Engine Piston Cooling Oil Pressure Sensor is used to detect engine piston lubrication and cooling system failures. The sensor consists of a pressure sensitive diaphragm and amplifier. Engine piston cooling oil pressure causes the sensors 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):
1) Low piston cooling pressure

Observable symptoms
1) Engine de-rated
2) Power loss

Probable cause
1) Piston Cooling Valve
2) Engine oil pressure
3) Engine Piston Cooling Oil Pressure Sensor
4) Oil filter housing