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Removing and installing pre-exhaust pipe with diesel particle filter > < Summary of components for Octavia II with four-wheel drive and Superb ll with engine with identification characters CLJA

Octavia Mk2

Replacing differential pressure senderG505
Replacing differential pressure sender -G505-
Engines with identification characters CFFB, CFGB, CFHA, CFHC, CFHF, CFJA
The differential pressure sender -G505- determines the volumetric efficiency of the particle filter volume. It is connected to the measuring point behind the diesel particle filter via a pressure line and to the diesel particle filter via another control line.
l  If the lines or hoses are clogged with soot, which significantly constricts their cross section, then the sender together with the bracket and the connected hoses must be completely replaced.
  Caution
The differential pressure sender -G505- is very sensitive to shock load and leaks.
t  Therefore the hoses of the sender must only be removed if the sender is damaged.
t  Furthermore there is the risk that the hose connections break off when the hoses are removed.
Removing
–  Remove engine cover → Chapter.
   
–  Disconnect the plug -2- at the differential pressure sender -G505--1-.
–  Screw out screw -6- and detach bracket -3- with differential pressure sender -G505- in -direction of arrow- from the bracket for additional fuel pump -V393- or fuel pump 2 -V277-.
–  Release screw -5- and remove bracket -8-.
–  Release spring strap clamps -7- and detach the hoses from the connection fittings of the differential pressure sender -G505--1-.
–  Release screw -4- and unclip the differential pressure sender -G505--1- from the bracket -3-.
Install
Installation is performed in the reverse order, pay attention to the following points:
  Note
t  Before installing, blow through the pressure lines to the differential pressure sender -G505- in order to avoid blockage.
t  Pay attention to the tight fit and leaktightness of the connections.
Tightening torques:
t  Octavia II, Yeti → Chapter
t  Superb II, Yeti → Chapter
–  An adaptation must be carried out after replacing the differential pressure sender -G505- → Vehicle diagnostic tester.
The work procedure for the adaptation is described in the „Targeted fault finding“. It is also described under „Targeted functions“.
–  Select the correct vehicle in the targeted fault finding.
–  Press button „Skip“.
–  Press „Selected Functions/Components“.
–  Select „Drive“.
–  Select „01 - Self-diagnosable systems“.
–  Select „01 - Engine electronics J623“.
–  Select „01 - Engine electronics, function“.
–  Select „01 - Erase initialisation values (Rep. Gr. 21 - 28)“.
  S26-0309

Removing and installing pre-exhaust pipe with diesel particle filter > < Summary of components for Octavia II with four-wheel drive and Superb ll with engine with identification characters CLJA