17/08/2026
Seeing alot of these piston cooling solenoids fail on the landrover 2l ingenium engine.
Warning signs are:
β Amber engine management light
β low oil message even though oil level is correct
β Diagnostic trouble code P25A9-00
On most occasions the solenoid failiure is caused by an untreated coolant leak from the thermostat housing which then drips on to the solenoid eventually causeing it to fail.