TorqFix

Removing and installing delivery line — AUDI

Removing and installing delivery line on Audi: 14 steps, engines CUUB, CUUC, CUUD, CUUE. What to remove, in what order, and what to check after.

Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.

14 steps 10 engine codes

🧭 Before you start

Fits: VW Caddy IV (SA, 2015–2020)

Don't miss

  • Place a cloth underneath separating points to catch any escaping reducing agent.

🔧 Engine codes this applies to

📋 Procedure

  1. Remove air filter housing .
  2. Unscrew bolts (1).
  3. Unclip air duct (2), and remove it.
  4. If fitted, remove noise insulation General body repairs, exterior66Noise insulation; Removing and installing noise insulation. [Note: Place a cloth underneath separating points to catch any escaping reducing agent.]
  5. Release plug-in connectors (1).
CUUB? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Seal off all open lines and connections with clean plugs from engine bung setVAS 6122.
  2. Disconnect electrical connector (3).
  3. Unclip deliver line (4) from retainers (2).
  4. Remove delivery line (4).
  5. If necessary, fill reducing agent 40Descriptions of work; AdBlue® (reducing agent).
  6. Connect .
  7. Switch ignition on.
  8. Adapt SCR system learnt values , 01 - Systems capable of self-diagnosis, 01 - Diesel direction injection and preglow system EDC 17, 01 - Engine electronics functions, 01 - Adapting SCR system learnt values.
  9. Follow further instructions displayed on .

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.