Removing Oxygen Sensor

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CAUTION: Hot components

Risk of burns

→ Let hot components cool down.

→ Wear personal protective gear.

Observe instructions when working with oxygen sensors.
→ 2400AW PRECAUTIONARY MEASURES WHEN HANDLING OXYGEN SENSORS .

Installation position of oxygen sensors on side 1-3

Fig 1: Identifying Oxygen Sensors On Side 1-3
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Oxygen sensor behind catalytic converter - black cable
2. Oxygen sensor ahead of catalytic converter - blue cable
3. Cable holder
4. M6 fastening screw → Tightening torque: 10 Nm (7 ft. lb.)
5. Cable mounting points for oxygen sensor behind catalytic converter
6. Cable mounting points for oxygen sensor ahead of catalytic converter
Oxygen sensors on side 4-6

Fig 2: Identifying Oxygen Sensors On Side 4-6
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Oxygen sensor behind catalytic converter - black cable
2. Oxygen sensor ahead of catalytic converter - blue cable
3. Cable holder
4. M6 fastening screw → Tightening torque: 10 Nm (7 ft. lb.)
5. Cable mounting point for oxygen sensor behind catalytic converter
6. Cable mounting points for oxygen sensor ahead of catalytic converter
Unclip cable for oxygen sensor behind catalytic converter (black) at the mounting points (item 5) .
Tool recommendation:
1. Torque wrench
2. short 3/8 inch extension (maximum 75 mm)
3. Crow Foot Wrench Nr.189-1 (Hazett 848Z)
  
  Fig 3: Identifying Crow Foot Wrench
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen oxygen sensor.
1. Oxygen sensor behind catalytic converter
2. Tool
  
  Fig 4: Loosening Oxygen Sensor Using Tool
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. 3.1. Connect extension with crow foot wrench -2- and connect to hexagon on sensor -1- . Position torque wrench and loosen sensor.
  
  Fig 5: Connecting Extension With Crow Foot Wrench Using Tool
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 3.2. Unscrew oxygen sensor by hand.