TorqFix

Renewing adapter cable with tubular cable terminal: Audi A8 D4 (CDSB, CTEC)

Step-by-step renewing adapter cable with tubular cable terminal for the Audi A8 D4 (CDSB/CTEC): 11 steps.

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

11 steps 2 engine codes

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

🔧 Engine codes this applies to

📋 Procedure

  1. Switch off ignition.
  2. Remove engine cover panel .
  3. Using stripping toolVAS 1978/3, sever electrical wire (1) leading to catalytic converter heater 2Z120 at point marked with (arrow) and move electrical wire clear.
  4. Remove nut (arrow) for catalytic converter heater 2Z120.
  5. Unplug electrical connector for catalytic converter heater 2Z120 using puller T40317.
CDSB? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Using stripping toolVAS 1978/3, sever electrical wire (1) leading to catalytic converter heater 1Z119 at point marked with (arrow) and move electrical wire clear.
  2. Remove nut (arrow) for catalytic converter heater 1Z119.
  3. Unplug electrical connector for catalytic converter heater 1Z119 using puller T40317.
  4. Repair electrical wire Electrical system97Electrical connectors; Repairing electrical wiring harnesses and electrical connectors.
  5. Tighten nut securing electrical connection for catalytic converter heater 1Z119 / catalytic converter heater 2Z120 (observe correct tightening torque).
  6. Install engine cover panel .

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.