Removing and installing pressure differential sender G505 — AUDI

🧭 Before you start

Fits: Audi A4 B9 (8W, 2015–)

🔧 Engine codes this applies to

📋 Procedure

1. Remove engine cover panel .
2. Release hose clips (arrows) and detach air pipe (1).
3. Remove bolt (arrow).
4. Unplug electrical connector (1).
5. Move bracket (2) clear with pressure differential sender G505.

6. Press release tabs on both sides and disconnect crankcase breather hose (2).
7. Unplug electrical connector (3) and move wiring clear.
8. Unscrew bolts (arrows) and detach intake connecting pipe (1).
9. Detach retaining clip (3).
10. Release catches (arrows) and detach bracket for pressure differential sender G505(item 2).
11. Release hose clips (1).
12. Spray hoses on pressure differential sender G505 with silicone-free lubricant.
13. To prevent hose connections from breaking off, carefully disconnect hoses and keep them straight when pulling them off. [Note: Blow through hose (towards emission control module) with compressed air to remove dirt or ice (frozen condensation).Make sure that hoses are securely fitted and seal properly.If pressure pipes have been detached from emission control module, tighten them to specified torque.Secure all hose connections with correct type of hose clips (as original equipment) Electronic parts catalogue.]
14. Install engine cover panel .
15. If pressure differential sender G505 was renewed, perform adaptions listed in Guided Function "“01 - Functions, engine mechanics”".

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