Removing and installing Lambda probe 3 after catalytic converter G287 and Lambda probe 4 after catalytic converter G288 — VW

🧭 Before you start

Fits: VW Phaeton (3D)

Don't miss

• Lambda probe 4 after catalytic converter G288 must be removed from below.

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove engine cover panels.
2. Remove coolant pipe (A) and take off cover (B).
3. Unscrew clip for Lambda probe cable (arrow).
4. Detach connector for Lambda probe to be removed. Overview of Lambda probe connectors .
5. Remove rear noise insulation 50.

6. Remove catalytic converter with front silencer (cylinder bank 2) .
7. Remove front left wheel.
8. Remove left heat shield of the drive shaft (arrows). The third bolt is not visible on illustration.
9. Remove front left exhaust pipe (cylinder bank 2).
10. Detach Lambda probe cable from clamps.
11. Unscrew Lambda probe 3 after catalytic converter G287 using an open ring spanner (A), joint and extension.
12. Lambda probe 4 after catalytic converter G288 must be removed from below.
13. Screw in Lambda probe 3 after catalytic converter G287 by hand and tighten hand-tight. Tighten joint and an extension to 50 Nm, using an open-end ring spanner (A). — 50 Nm (37 lb-ft)
14. Screw in Lambda probe 4 after catalytic converter G288 by hand and tighten hand-tight. Tighten joint and an extension to 50 Nm, using an open-end ring spanner (A). — 50 Nm (37 lb-ft)

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