Test conditions

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Vacuum lines and hose connections free of leaks.
Vacuum lines not blocked or kinked.
Selector lever must be in position "P" or "N" on models with an automatic transmission.
Coolant temperature must be at least 85 ° C, → display group 1, display zone 2.

Oxygen sensor aging before catalytic converter OK, checking: → 24 MULTIPORT FUEL INJECTION (MFI)

NOTE:

The diagnosis will only be ended if the oxygen sensor aging diagnosis before catalytic converter is completed successfully first.