engine

Oil Level Sensor

for 2021 Ford F-150 3.5L V6 EcoBoost · 4WD

Difficulty

Easy

Time

1.0 h

Tools

Steps

This procedure covers the removal and replacement of the oil level sensor on the 2021-2024 Ford F-150 with 3.5L EcoBoost V6 engine, including proper torque specifications and system verification.

Warnings

⚠Ensure engine is cool before beginning work to avoid burns from hot oil or components

⚠Oil will drain from sensor location when removed; have drain pan positioned properly

ℹ️The oil level sensor is located on the oil pan and may be difficult to access without raising the vehicle

Tools required

10mm socket and ratchetEssential

Torque wrench (5-25 Nm range)Essential

Oil drain panEssential

Shop towels or ragsEssential

Vehicle lift or jack standsEssential

Flathead screwdriver or trim tool

Wire brush

Brake cleaner

Parts

Oil level sensor × 1 — Use OEM Ford specification
Oil level sensor O-ring or seal × 1 — Usually included with sensor

Fluids

Motorcraft 0W-20 Full Synthetic — 1 qt

Preparation

Park vehicle on level surface and engage parking brake
Allow engine to cool completely for at least 30 minutes
Raise vehicle securely on lift or jack stands to access underside
Locate oil level sensor on passenger side of oil pan, toward rear
Position drain pan beneath sensor location to catch residual oil

Procedure

1
Disconnect battery negative terminal
Disconnect the negative battery terminal to prevent electrical shorts or fault codes during sensor replacement. Use a 10mm wrench to loosen the terminal clamp and position cable away from battery.
2
Access oil level sensor
From underneath the vehicle, locate the oil level sensor on the passenger side of the oil pan. It will have an electrical connector attached. Clean any dirt or debris from around the sensor and connector area to prevent contamination.
3
Disconnect electrical connector
Press the tab on the electrical connector and carefully pull it straight off the oil level sensor. Inspect the connector pins for corrosion or damage. If connector is secured with a bolt, remove it first.
Torque spec
Electrical Connector Bolts8 Nm (6 lb-ft)
4
Remove oil level sensor
Using a 10mm socket, carefully loosen and remove the oil level sensor from the oil pan. Turn counterclockwise to remove. Be prepared for a small amount of oil to drain from the opening. Allow oil to drain completely into the drain pan.
⚠Do not overtighten or force the sensor during removal as the oil pan threads can be damaged
5
Clean sensor mounting area
Clean the sensor mounting hole and surrounding area on the oil pan using a shop towel. Remove any old gasket material or debris from the sealing surface. Use brake cleaner if necessary to ensure a clean, dry surface for the new sensor seal.
6
Inspect new sensor
Verify the new oil level sensor has the O-ring or seal properly installed. Lightly coat the O-ring with clean engine oil to aid installation and prevent damage. Ensure the sensor threads are clean and undamaged.
7
Install new oil level sensor
Thread the new oil level sensor into the oil pan by hand, turning clockwise. Once hand-tight, use a torque wrench and 10mm socket to tighten the sensor to the specified torque value. Do not overtighten.
Torque spec
Oil Level Sensor15 Nm (11 lb-ft)
8
Reconnect electrical connector
Push the electrical connector firmly onto the new oil level sensor until it clicks into place. Ensure the connector is fully seated and the locking tab engages properly. If connector bolt was removed, reinstall and torque to specification.
Torque spec
Electrical Connector Bolts8 Nm (6 lb-ft)
9
Reconnect battery
Reconnect the negative battery terminal and tighten the clamp securely. This will restore power to the vehicle electrical system.
10
Check and top off engine oil
Lower the vehicle to ground level. Check the engine oil level using the dipstick. Add Motorcraft 0W-20 Full Synthetic oil as needed to bring level to the full mark. The system capacity is 6 quarts, but only add what was lost during sensor replacement.

Reassembly

Ensure electrical connector is fully seated and locked onto sensor
Verify no tools or parts were left in engine compartment or under vehicle
Double-check that oil level is at the full mark on dipstick

Verification

Start the engine and allow it to idle for 2-3 minutes
Check for oil leaks around the new sensor installation point
Turn off engine and verify oil level on dipstick remains at full mark
Use a scan tool to verify no oil level sensor fault codes are present in the PCM
Verify the oil level warning light does not illuminate on the instrument cluster with proper oil level
Take a short test drive and recheck for leaks after engine reaches operating temperature