Heated Oxygen Sensor (HO2S): Removal

All sensors 

1. 1. Remove the nut.

      Torque: 42 lb.in (4.8 Nm)

   2. Detach the 2 engine appearance cover grommets from the ball studs and remove the engine appearance cover.
   3. If the engine appearance cover stud bolt is loosened or removed, it must be installed/tightened into the valve cover.

      Torque: 62 lb.in (7 Nm)

   Courtesy of FORD MOTOR COMPANY

2. With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .

   Right hand Heated oxygen sensor 

3. Remove the upper RH air cleaner outlet pipe. Refer to: Air Cleaner Outlet Pipe RH .
4. Remove the retainers and the underbody shield.

   Courtesy of FORD MOTOR COMPANY

5. Loosen the clamp and position the lower RH air cleaner outlet pipe away from the turbocharger.

   Torque: 44 lb.in (5 Nm)

   Courtesy of FORD MOTOR COMPANY

6. Release the clamps and disconnect the tubes. Remove the bolt from the lower air cleaner outlet pipe and position aside.

   Torque: 71 lb.in (8 Nm)

   Courtesy of FORD MOTOR COMPANY

7. Loosen the clamp and separate the RHCAC intake lower pipe.

   Torque: 44 lb.in (5 Nm)

   Courtesy of FORD MOTOR COMPANY

8. Loosen the clamp and separate the RHCAC intake upper pipe.

   Torque: 44 lb.in (5 Nm)

   Courtesy of FORD MOTOR COMPANY

9. • Disconnect the EVAP canister purge valve quick release coupling. Refer to: Quick Release Coupling .
   • Detach the retainer and position the EVAP canister purge valve tube aside.

   Courtesy of FORD MOTOR COMPANY

10. Detach the coolant hose from the starter motor bracket.

    Courtesy of FORD MOTOR COMPANY

11. • Remove the bolt.

      Torque: 71 lb.in (8 Nm)

    • Disconnect the bypass valve electrical connector and remove the CAC intake pipe RH.

    Courtesy of FORD MOTOR COMPANY

12. Clean, inspect, and cover all open ports.
13. Disconnect the HO2S wire retainer and electrical connector.

    Courtesy of FORD MOTOR COMPANY

14. Apply penetrating oil to sensor, using the special tool remove the HO2S. Use Special Service Tool: 303-476 (T94P-9472-A) Socket, Exhaust Gas Oxygen Sensor.

    Material: Motorcraft® Penetrating and Lock Lubricant / XL-1

    Courtesy of FORD MOTOR COMPANY

    Left hand Heated oxygen sensor 

15. Remove the bolts and harness pushpins. Position the harness to access the HO2S sensor.
    • Remove the harness retainer bolt.

      Torque: 71 lb.in (8 Nm)

    • Remove the ground cable bolt.

      Torque: 159 lb.in (18 Nm)

    Courtesy of FORD MOTOR COMPANY

16. Disconnect the HO2S electrical connector.

    Courtesy of FORD MOTOR COMPANY

17. Apply penetrating oil to sensor, using the special tool remove the HO2S. Use Special Service Tool: 303-476 (T94P-9472-A) Socket, Exhaust Gas Oxygen Sensor.

    Material: Motorcraft® Penetrating and Lock Lubricant / XL-1

Courtesy of FORD MOTOR COMPANY