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– Disconnect electrical harness connector -1- for Heated Oxy‐
gen Sensor (HO2S) 2 -G108- and free up wire.
Note
Ignore -2 -.
– Remove oxygen sensor -1- using ring spanner set -3337- .
Note
To improve clarity, the engine is shown removed.
Installing
Installation is in reverse order of removal, note the following:
Note
♦
New oxygen sensors are coated with assembly paste; the
paste must not get into slots of oxygen sensor body.
♦
When reinstalling the previously used oxygen sensor, coat
thread with hot bolt paste ⇒ Parts Catalog . Paste must not
get on to slits of sensor body.
♦
Wires of oxygen sensors must always be secured in the same
position when installing so that contact with the exhaust pipe
is avoided.
Tightening Specifications
Component Nm
Oxygen sensor in front exhaust pipe 55
5.9 Oxygen Sensor after Catalytic Convert‐
er, Bank 1
Special tools and workshop equipment required
♦ Ring spanner 7-piece set for oxygen sensor -3337-
Audi A6 2005 ➤
Fuel Injection and Ignition - Edition 03.2008
5. Removal and Installation 47
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