Removing and installing Lambda probe G39: Audi A1 (BMC, BVN, CABA, CABB, …)

🧭 Before you start

Fits: Audi A1 (8X, 2010–2018)

Don't miss

• Disregard (items 1, 2).

🔧 Engine codes this applies to

📋 Procedure

1. Move coolant hose (1) clear.
2. Unscrew bolts (arrows) and remove engine cover panel.
3. Unscrew bolts (2) and detach retaining bracket (1).
4. Unplug electrical connector (3) at charge pressure sender G31 / intake air temperature sender 2G299.
5. Release retainers (arrows) and detach air pipe first from throttle valve module J338 and then from turbocharger.

6. Move clear hoses at air pipe.
7. Press release ring and detach lines (2) and (3).
8. Remove bolts (1 and 4) and pull crankcase breather hose off timing chain cover.
9. Release fasteners (arrows) and detach air duct (1).
10. Unplug electrical connector (1) on turbocharger air recirculation valve N249 and (2) on charge pressure control solenoid valve N75.
11. Disconnect hose for charge pressure control solenoid valve N75 from turbocharger.
12. Disconnect hose (2) at vacuum unit (3) for turbocharger.
13. Remove bolts (3 and 4), detach connection and press to one side with crankcase breather hose connected. [Note: Disregard (items 1, 2).]
14. Remove noise insulation General body repairs, exterior66Noise insulation; Exploded view - noise insulation.
15. Unplug electrical connector (2) for Lambda probe G39 and Lambda probe heater Z19.
16. Unscrew Lambda probe G39(1) using tool from Lambda probe open ring spanner set3337. [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 Electronic 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.]

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