Audi Workshop Service and Repair Manuals

Removing and installing control pipe for pressure sensors Removing –  Remove engine cover panel → Chapter.

–  Remove pressure differential sender -G505--2- → Chapter.

–  Detach heat insulation sleeve and remove exhaust gas pressure sensor 1 -G450--3- → Chapter. –  Detach clamp -1-

–  Remove noise insulation -1- → Rep. gr.66.

–  Detach clamp -2-, unscrew bolts -1- and take out filter.

–  Disconnect control pipe -2- from exhaust pipe behind particulate filter.

–  Remove nuts -2-.   Note Disregard -item 1-.

–  Remove bolt -4- and move particulate filter towards rear. –  Slacken nut -2- only until control pipe is loose.

–  Guide out and remove control pipe. Installing –  Install in reverse order. l  Tightening torque: Lambda probe - exploded view → Chapter   Note t  Before installing, blow out control pipes to particulate filter towards particulate filter with compressed air (pipes can become obstructed or may ice up due to condensation). t  Make sure that hoses are securely fitted and seal properly.