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| Detach electrical connector from exhaust gas pressure sensor 1 -G450--3-. |
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| Unscrew bolt and detach bracket from exhaust gas pressure sensor 1 -G450-. |
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| Release retaining clips from both hoses. |
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| Before disconnecting, spray hoses coming from exhaust gas pressure sensor 1 -G450- with suitable release agent. |
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| Carefully pull hoses off connections (take care to keep the hoses straight; the connections can easily break off exhaust gas pressure sensor 1 -G450-). |
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| When installing, note the following: |
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| Tightening torque: Lambda probe - exploded view → Chapter |
Note | t
| Before installing, blow out control pipes from exhaust gas pressure sensor 1 -G450- to particulate filter towards particulate filter with compressed air (pipes can become obstructed or may ice up due to condensation). |
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| Make sure that hoses are securely fitted and seal properly. |
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| If pressure connections are detached from particulate filter, tighten to 45 Nm. |
| After renewing exhaust gas pressure sensor 1 -G450- and/or particulate filter, adaption must be performed in order to reset learnt values. The adaption procedure is described in the Guided Fault Finding or Guided Functions; use a vehicle diagnostic tester. |
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