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Test exhaust emissions warning lamp K83 > < Check lambda probe ageing before catalyst

Octavia Mk1

Testing lambda probe G130 and lambda control downstream of catalytic converter
Testing lambda probe -G130- and lambda control downstream of catalytic converter
Special tools, test equipment as well as aids required
t  Vehicle system tester -V.A.G 1552- with cable -V.A.G 1551/3-, 3A, 3B or 3C
t  Handheld multimeter, e.g. -V.A.G 1526 A-
t  Measuring tool set, e.g. -V.A.G 1594 A-
Test conditions
l  Exhaust system between catalyst and cylinder head tight.
l  Coolant temperature at least 85°C, display group 004, display field 3 → Chapter, or → Chapter.
   
l  Fuse no. 43 o.k.
l  Battery voltage at least 11.5 volts
l  Fuel pump relay OK
Check for proper operation
–  Check display groups 030, 036, 037 and 041 → Chapter.
If the specified values are not reached:
–  Test resistance of heating element between the contacts 1 + 2, voltage supply for heater and cables to -Z29- → Current flow diagrams and Fitting locations.
  Note
The heating element resistance is of approx. 1...5 Ω at 20°C.
If the specified resistance is reached and the voltage supply for heater or cables to -Z29- O.K.:
  S97-0319
–  Connect the multimeter for voltage measurement to contacts 3 and 4 (plug connection to engine control unit).
–  Start engine and measure basic voltage.
Specified value: 0,400...0,500 V
–  Switch off ignition.
If the specified value is reached:
–  Replace lambda probe after catalyst -G130-.
If the specified value is not reached:
–  Test cables to lambda probe -G130- → Current flow diagrams and Fitting locations.
If the lines are not found to be faulty:
–  Replacing engine control unit → Chapter.
  M24-0013

Test exhaust emissions warning lamp K83 > < Check lambda probe ageing before catalyst