Installing Oxygen Sensor Downstream Of Catalytic Converter

WARNING: This page is about a different variant/trim than selected.

CAUTION: Risk of damage to sensor if handled incorrectly!

→ Do not remove the plastic cap on the thread until just prior to fitting the sensor. The grease used on the thread must never get into the connector.
→ Protect sensors - before and after fitting - against mechanical shocks.
→ Sensors that were dropped on the floor must not be used owing to the risk of a broken ceramic insulator.
→ The cables must not be twisted or kinked when the sensors are screwed in. Avoid pulling on the cable and connector.
→ Cleanliness in the housing of the plug connections is of utmost importance for the oxygen sensor to function
→ properly. Particles of dirt can impair the function of the sensor. The connector must therefore be protected against any and all types of soiling.
→ Sensors with a soiled or damaged connector must no longer be used.
→ Protect the cables and connectors when carrying or moving the exhaust system with the sensors already fitted.
→ High-pressure cleaning equipment must not be used in the area of the sensors and plug connections.
→ Contact and corrosion agents, e.g. Stabilant, must not be applied to the plug contacts of the oxygen sensors.

Information

When re-installing oxygen sensors, only grease the thread with lubricant (see PET).
Make sure that the lubricant does not get into the slits in the sensor body.
New oxygen sensors have already been greased and the thread Is fitted with a protection cap.

Information

The > 3337 - ring wrench set for oxygen sensor is the ideal tool.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oxygen sensor tool

Installation is performed in reverse order. Pay particular attention to the following:
1. 1.1 Tighten oxygen sensor upstream of catalytic converter.
  - Tightening torque 52 Nm (38 ftlb.)