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| Before disconnecting, spray the hoses for the pressure differential sender -G505- with suitable release agent. |
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| Carefully disconnect the hoses from their connections (take care to keep the hoses straight: the connections on pressure differential sender -G505- can break off easily). |
Note | The short measuring line can also be pulled off with the exhaust gas pressure sensor 1 -G450- removed. |
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| Unplug electrical connector -2- at pressure differential sender -G505-. |
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| Unscrew bolt -1- and take out pressure differential sender -G505-. |
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| When installing, note the following: |
Note | t
| Before installing, blow out hose for pressure differential sender -G505- towards particulate filter with compressed air (hose 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 pipes have been detached from particulate filter, tighten connections to specified torque. |
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| Tightening torque: Lambda probe and exhaust gas temperature control - exploded view → Chapter. |
| 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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