Installing Oxygen Sensor Downstream Of Catalytic Converter

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. 

1. When re-installing the oxygen sensor, coat the thread with the prescribed lubricant.
   NOTE: Incorrect handling of oxygen sensors

   • Damage to oxygen sensors
   • Different exhaust emission behavior

   → Do not remove the plastic cap on the thread until just prior to fitting.

   → Protect oxygen sensors from impact of any kind.

   → Do not kink or twist the cables when screwing in the sensors.

   → Do not re-use dirty or damaged components.

2. Screw in oxygen sensor by hand and tighten according to tightening specification.

   Tightening torque using prescribed tool 39 Nm (29 ftlb.) 

   1. 2.1. Use the same tool as specified in the removal description! 
3. Route oxygen sensor cable along the engine and secure it at the defined mounting points (see overview diagrams).
4. Route oxygen sensor cable in engine compartment and clip into the holder.
   1. 4.1. Close plug connection and lock into the holder.