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)

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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.

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

   Torque: 44 lb.in (5 Nm)

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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)

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

   Torque: 44 lb.in (5 Nm)

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

   Torque: 44 lb.in (5 Nm)

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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.

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

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11. • Remove the bolt.

      Torque: 71 lb.in (8 Nm)

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

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

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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

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    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)

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16. Disconnect the HO2S electrical connector.

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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