Installing Lambda Sensor Upstream Of Catalytic Converter

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Observe precautionary measures when working with lambda sensors!
→ 2400AW00 PRECAUTIONARY MEASURES WHEN HANDLING LAMBDA SENSORS .

Information
- When reinstalling oxygen sensors, grease the thread with the Optimol Paste MF lubricant (Part No. 000.043.207.07) only.
- New oxygen sensors have already been greased and the thread is fitted with a protection cap.
Install lambda sensor.
1. 2.1. During reinstallation, the thread of the lambda sensors must be coated with the prescribed grease.
2. 2.2. Install lambda sensor on side 4-6.
  Position lambda sensor 4-6 -4- upstream of catalytic converter -8- and tighten with an open ring wrench Nr.98 and torque wrench.
  
  → Tightening torque: 55 Nm (41 ft. lb.) +/-5 Nm (+/-3.5 ft. lb.)
  
  Fig 1: Identifying Lambda Sensor Upstream Of Catalytic Converter 4-6
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Install lambda sensor on side 1-3.
1. 3.1. During reinstallation, the thread of the lambda sensors must be coated with the prescribed grease.
2. 3.2. Position lambda sensor 1-3 -3- upstream of catalytic converter -9- and tighten it with an open ring wrench Nr.98 and torque wrench.
  → Tightening torque: 55 Nm (41 ft. lb.) +/-5 Nm (+/-3.5 ft. lb.)
  
  Fig 2: Identifying Lambda Sensor Upstream Of Catalytic Converter 1-3
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Route lambda sensor wire.
1. 4.1. Route lambda sensor wire 4-6.
  Clip lambda sensor wire -2- with the blue boot into the brackets -3, 4, and 5- .
  
  Fig 3: Identifying Lambda Sensor Wire 4-6
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 4.2. Route lambda sensor wire 1-3.
  Clip lambda sensor wire -2- with the blue boot into the brackets -3, 4 and 5- .
  
  Fig 4: Identifying Lambda Sensor Wire 1-3
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Connect plug connections for lambda sensor wire.
1. 5.1. Connect plug connections for lambda sensors with the blue boot -2, 6- on the right and left and insert into the bracket -3, 4- .
  
  Fig 5: Identifying Lambda Sensor Plug Connections
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.