In this video, you will see the complete process of locating and replacing the engine oil pressure switch (also called the oil pressure sensor or sending unit) on a Ford Fusion equipped with the 2.0L EcoBoost turbo engine. If your dashboard is flashing a low oil pressure warning light, your oil pressure gauge is acting erratic, or you spot an active oil leak dripping near your oil filter area, this visual guide shows you exactly where to look to find the switch and how to swap it out.
How this video helps you: The engine oil pressure switch monitors the internal oil pressure to ensure your engine components stay properly lubricated. On the 2.0L EcoBoost engine, this switch is located on the front side of the engine block, threaded directly into the aluminum oil filter adapter housing right above the oil filter assembly. Because it is positioned down low, tucked tightly behind the radiator cooling fan shroud and beneath the turbocharger charge piping, you cannot see or service it from above the engine bay. This video points directly to its exact location on the vehicle so you can see it clearly from underneath. You will see how to drop the lower splash shield, how to safely squeeze and release the locking electrical harness plug without breaking the plastic tab, and the exact socket setup needed to unthread the switch cleanly.
💡 Pro Tip: Oil pressure switches are notorious for failing internally, which forces engine oil right through the center of the plastic sensor connector housing. When you unplug the electrical harness, check inside the plug—if it is completely filled with wet engine oil, the switch has failed internally. Clean the harness plug thoroughly with electrical contact cleaner before plugging in your new switch to prevent a weak connection or false readings!
Common symptoms of a bad Engine Oil Pressure Switch: The oil pressure switch acts as a critical safety sentry. When its internal diaphragm ruptures or the electrical contacts wear out, it sends incorrect voltage signals to the computer, causing these classic issues:
- Low Oil Pressure Light Flashing On Dash: The red oil can icon or a “Low Oil Pressure – Stop Safely” warning message flashes on your dashboard, even though you checked your dipstick and verified that the engine oil level is completely full and the engine sounds perfectly quiet.
- Flickering Indicator Light at Idle: The oil pressure light flickers or comes on only when the engine drops down to a hot idle at a stoplight, then disappears completely as soon as you step on the gas pedal and raise the RPMs.
- Active Oil Leak Near the Filter Assembly: A ruptured switch will cause a steady, slow oil drip that coats the oil filter, the side of the oil pan, and leaves oil spots on your driveway.
- Check Engine Light & Fault Codes: A circuit failure or open line in the pressure sending unit will trip the engine light, storing diagnostic trouble codes such as P0520 (Oil Pressure Sensor Circuit), P0522 (Low Voltage), or P0523 (High Voltage).
Watch the video to see the exact location on the oil filter housing and get your oil pressure switch replaced cleanly!