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what make and model scan tool you have?
i do need a vin # please.
ok i do need to use vag com and i do need measured values of the mixture adapations at idle and part throttle . measured value block 32 and the grams per second of the mass air flow sensor either 001 or 002 post here.
once you have that then have the engine running go to basic settings 077 then turn test on then press and hold the brake pedal . let it run the test . after that then print the final readings after the test here
the 077 is a direct test of the secondary air but must be at operating temp!!
please do thanks for the update
lets try basic settings 160 and run the test
is the air filter plugged up ? make sure the snow screen , air inlet screen is not plugged up with debris. before filter
at the end what was the readings of all 4 fields?
the test must be running and possible the brake needs to be pressed to run the test!!
the field of the last field must read 00000100
that means test passed!!