Volvo

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) Power loss

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

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) Sensor value differs from estimated value

Observable symptoms
1) Engine de-rated

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

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) The voltage at pin A14.EB:19 is above normal value

Diagnostic operating conditions
1) Ignition key in ON position

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

Probable cause
1) Open circuit, Ground wire
2) Short circuit to 5V, Signal wire
3) Short circuit to battery voltage, Signal wire
4) Engine Piston Cooling Oil Pressure Sensor

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) The voltage at pin A14.EB:19 is below normal value
2) Ignition key in ON position

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

Probable cause
1) Open circuit, Signal wire
2) Open circuit, Supply wire
3) Short circuit to ground, Signal wire
4) Engine Piston Cooling Oil Pressure Sensor

The oil thermostat is located in the oil filter housing and controls the engine oil temperature by controlling if the oil is sent through the oil cooler or not. The Engine Control Module (ECM) monitors that the thermostat is working as expected by comparing the Engine Oil Pressure (EOP) Sensor value to a calculated oil temperature.

Conditions for diagnostic trouble code (DTC):
1) The current at pin A14.EB:53 is above 2.2?A
2) Ignition key in ON position

Observable symptoms
1) Low oil temperature

Probable cause
1) Short circuit to voltage supply, control wire
2) Short circuit in control valve

Diagnostic operating conditions
1) Increased fuel consumption

The oil thermostat is located in the oil filter housing and controls the engine oil temperature by controlling if the oil is sent through the oil cooler or not. The Engine Control Module (ECM) monitors that the thermostat is working as expected by comparing the Engine Oil Pressure (EOP) Sensor value to a calculated oil temperature.

Conditions for diagnostic trouble code (DTC):
1) The voltage at pin A14.EB:53 is between 33?% and 67?% of the battery voltage

Diagnostic operating conditions
1) Ignition key in ON position

Observable symptoms
1) Increased fuel consumption
2) Low oil temperature

Probable cause
1) Open circuit on common supply wire or open circuit on fuse FE9
2) Open circuit in the valve
3) Open circuit in component