Audi Workshop Service and Repair Manuals

Special tools, workshop equipment and other materials required

• ◆ Ring spanner set 3337
• ◆ Hot paste G 052 112 A3

Work sequence

• ‒ → Unplug 4-pin connector for lambda probe and move wiring clear.

•     1 -    (black) for lambda probe (before catalytic converter) -G39
•     4 -    (brown) for lambda probe (after catalytic converter) -G130

• ‒ Unscrew lambda probe using special tool 3337.

When installing, note the following points:

Notes:

• ◆ The screw thread on the lambda probe is coated with a special paste. This paste must not be allowed to penetrate the openings on the probe.
• ◆ Tightening torque: 55 Nm.
• ◆ When installing, the lambda probe wire must be secured in exactly the same position as before in order to avoid contact between the wire and the exhaust pipe.