Removing and installing NOx sender G295 - vehicles with two turbochargers — AUDI
Removing and installing NOx sender G295 - vehicles with two turbochargers on Audi: 10 steps, engines CDUC, CDUD, CGQB, CKVB.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6/A7 C7 (4G, 2011–2018)
- Also covered elsewhere: Electronic parts catalogue
Don't miss
- Disregard (items 1, 2).
- Coat thread with high-temperature paste; for high-temperature paste refer to Electronic parts catalogue.
📐 1 workshop diagram for CDUC
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- ⚠ When working on all parts of the exhaust system:Observe safety precautions when working on the exhaust system . — Remove engine cover panel .
- Release hose clip (3) and detach air hose. [Note: Disregard (items 1, 2).]
- Unplug electrical connector (1).
- Lift retaining clip and disconnect coolant line (2).
- Seal off open lines and connections with clean plugs from engine bung setVAS 6122.
- Remove bolt (3) and place coolant expansion tank to one side.
- Unscrew NOx sender G295(arrow) using a tool from tool set T10395 A.
- Unplug electrical connector (2).
- Unscrew nut (1) and detach control unit for NOx sender J583(item 3) from bracket.
- Move electrical wiring harness clear and detach NOx sender G295 with control unit for NOx sender J583. [Note: Coat thread with high-temperature paste; for high-temperature paste refer to Electronic parts catalogue.]
Ask TorqFix about your Audi CDUC — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi CDUC — free → or sign up free to see the drawingsOther AUDI procedures
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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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.