Oxygen Sensor: Service and Repair

(Check Operation Of Digital Engine Electronics (DME), refer to Powertrain Management, Computers and Control Systems, Testing and Inspection)





Disconnect connector for oxygen sensor. Unclip Lambda oxygen sensor cable from bracket. Unfasten Lambda oxygen sensor.

Installation:
Coat thread of new oxygen sensors with Anti-Seize.
If one Lambda oxygen sensor is reused, only apply light coat of Loctite Anti-Seize to thread (obtainable from any specialist shop).
Do not allow any lubricant to make contact with the Lambda oxygen sensor section protruding into the exhaust section.





Installation:
Tighten Lambda oxygen sensor with Special Tool 11 7 030.
Tightening torque, refer to Engine, Specifications.
Protect (mask) Lambda oxygen sensor when applying underseal.
Note cable routing of Lambda oxygen sensor.