Removing and installing combination valves for secondary air system — AUDI

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

• Renewed: seals

Don't miss

• Renew seals and gaskets.

🔧 Engine codes this applies to

📋 Procedure

1. Remove secondary air pump .
2. Detach air hoses (1 ... 4) from combination valves for secondary air system.
3. Remove bolts (arrows) and remove air duct (left-side).
4. Loosen hose clip (1) and remove bolts (2, 3, 4).
5. Remove top section of air cleaner (left-side).

6. Unplug electrical connector (arrow) at air mass meter 2G246.
7. Pull bottom section of air cleaner away from connection on side.
8. Pivot bottom section of air cleaner upwards (arrow) and remove.
9. Detach vacuum hoses (2) and (4) from combination valves for secondary air system.
10. Unscrew bolts (1) and (3) and detach bracket with combination valves for secondary air system.
11. Unscrew relevant combination valve for secondary air system from bracket. [Note: Renew seals and gaskets.]
12. Install secondary air pump .
13. Install air cleaner housing (left-side) 24.

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