Removing and installing exhaust gas pressure sensor 1G450 — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

🔧 Engine codes this applies to

📐 20 workshop diagrams for ASB

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Exhaust gas pressure sensor 1G450(1) is mounted on gearbox (right-side).
2. Before disconnecting, spray the two hoses (arrows) with suitable release agent.
3. Carefully pull hoses off connections (take care to keep the hoses straight; the connections can easily break off exhaust gas pressure sensor 1G450).
4. Detach electrical connector from exhaust gas pressure sensor 1G450(1).
5. Unscrew the two bolts and remove exhaust gas pressure sensor 1G450.

6. When installing, note the following: [Note: Before installing, blow out hoses for exhaust gas pressure sensor 1G450 towards particulate filter with compressed air (hoses can become obstructed or may ice up due to condensation).Make sure that hoses are securely fitted and seal properly.Tightening torque: 3.5 NmIf pressure connections are detached from particulate filter, tighten to 30 Nm.]
7. Enter correct vehicle identification in Guided Fault Finding.
8. Press "“Go to”" button.
9. Press "“Function/component selection”".
10. Select "“Drive train”".
11. "“01 - Self-diagnosis compatible systems”"
12. "“01 - Engine electronics”"
13. Select "“Functions”".
14. "“Adapt particulate filter learned values”"

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