Checking for contamination of throttle valve: Audi A3 1.8 (ARX, ARY, AUM, AUQ)
Step-by-step checking for contamination of throttle valve for the Audi A3 1.8: 20 steps. 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.
🧭 Before you start
Fits: Audi A3 (8L, 1996–2003)
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- Connect vehicle diagnosis and service information systemVAS 5052 to engine control unit. Engine must be idling.
- Connect up the vehicle diagnosis and service information systemVAS 5052 and select vehicle system "“Engine electronics”". Engine must be idling.
📐 43 workshop diagrams for ARX
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Connect vehicle diagnosis and service information systemVAS 5052 to engine control unit. Engine must be idling.
- Select "“Basic setting”".
- Use the keypad (2) to enter "“032”" for "“Display group number 032”" and confirm by touching the Q key.
- Check the specification in display zone (2).
- Unplug the connector from the air mass meter.
- Connect up the vehicle diagnosis and service information systemVAS 5052 and select vehicle system "“Engine electronics”". Engine must be idling.
- Select Basic setting.
- Enter "“107”" for "“Display group number 107”" and confirm by touching the Q key.
- Check the display in zone (4).
- Touch the ▾ key.
- Re-connect the air mass meter.
- For further fault-finding, perform the next step in the fault table.
- Touch the ▾ key.
- Use a lint-free cloth and cleaning fluid to clean the air duct in the throttle valve module.
- Perform throttle valve module adaption again
- Repeat test sequence: Lambda control, short trip; Measured value block 107 in Basic setting 04
- Re-connect the air mass meter.
- Erase the fault memory .
- Perform a test drive. Heed the safety instructions
- Fault memory interrogated
Ask TorqFix about your Audi ARX — 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 ARX — 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.