Removing and installing Lambda probe after catalytic converter G130/G131/G287/G288 — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

• Special tools named: 3337

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• Disregard (items 3 and 4).For illustration purposes, the installation position is shown with the engine removed.
• Disregard (items 1 and 2).For illustration purposes, the installation position is shown with the engine removed.

🔧 Engine codes this applies to

📋 Procedure

1. Remove secondary air pumps V101/V189.
2. Remove bolt (1) for coolant pipe on gearbox (rear right).
3. Remove bolts (arrows) on both sides and detach brackets for secondary air pumps.
4. Detach electrical connectors from bracket, unplug and move electrical wires clear:
5. Unscrew Lambda probe after catalytic converter G130(2) using tool from Lambda probe open ring spanner set3337.

6. Unscrew Lambda probe 2 after catalytic converter G131(1) using tool from Lambda probe open ring spanner set3337. [Note: Disregard (items 3 and 4).For illustration purposes, the installation position is shown with the engine removed.]
7. Unscrew Lambda probe 3 after catalytic converter G287(3) using tool from Lambda probe open ring spanner set3337.
8. Unscrew Lambda probe 4 after catalytic converter G288(4) using tool from Lambda probe open ring spanner set3337.
9. Unscrew Lambda probe 4 after catalytic converter G288(item 4) with ring spanner 3337/1. [Note: Disregard (items 1 and 2).For illustration purposes, the installation position is shown with the engine removed.] [Note: Threads of new Lambda probes are already coated with assembly paste; the paste must not get into the slots on the probe body.In the case of a used Lambda probe grease only the thread with high-temperature paste. The paste must not get into the slots on the Lambda probe body. High-temperature paste Parts catalogueWhen installing, the Lambda probe wire must always be reattached at the same locations to prevent it from coming into contact with the exhaust pipe.Fit all cable ties in the original positions when installing.]
10. Install secondary air pumps V101/V189.

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