Volvo All Engines (2017 Emissions) Fault Code: P25AA00 PID: EMS Piston Cooling Oil Control Circuit Low
Volvo All Engines (2017 Emissions) Fault Code: P25AA00 PID: EMS Piston Cooling Oil Control Circuit Low
The engine piston cooling oil supply valve is located in the oil filter housing and is used to control the piston cooling oil pressure. The engine control module (ECM) controls the valve by monitoring the signal from the piston cooling oil pressure sensor. If an electrical fault is detected inside the valve it will be fully open (fail safe).
Conditions for diagnostic trouble code (DTC):
1) Output not activated
2) The voltage at pin A14.EB:41 is less than 33 % of the battery voltage
Diagnostic operating conditions
1) Ignition key in ON position
Observable symptoms
1) None
Probable cause
1) Short circuit to ground in the component or wiring
2) Piston Cooling Valve
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