Types of lambda probes used
- 1 - unheated probe;
- 2, 3 - heated probes
There are three types of lambda probes used in Audi vehicles. When replacing, only the same probe as the one installed in the vehicle should be installed.
Execution order
1. Disconnect the probe electrical connector from the wiring harness.
2. Unscrew the lambda probe (see Fig. Exhaust system) from the exhaust manifold.
3. Lubricate the thread of the new lambda probe with special VAG G5 grease. Make sure that the grease does not get into the cracks and holes of the probe. Do not touch the working part of the new probe with your hands, protect it from contamination.
4. Screw the lambda probe into the exhaust manifold and tighten to a torque of 50 N·m (5.0 kgf·m).
5. Connect the electrical connector of the probe.
[The original article is available on the online resource: AUDImanual]