Does anybody out there know how to use the vag-com tool/laptop to troubleshoot the Oxygen O2 sensors in the Catalytic converter to see if they are bad.
THANKS I will try to do that this weekend. I don't think my car falls under the 100k/10year Catalytic recall, mine has 152k miles.Try setting the readiness for the O2s and CAT.
Basic Settings, group 034, 036 and sometimes 037 will test the O2 sensors. Group 046 will test the cat. These will be done at a raised RPM. Some cars you have to manually hold the accelerator pedal to maintain RPMs in the needed range (which can vary depending on the engine code). Other cars you may just need to step on the brake and full accelerator pedal and the RPMs will increase to a preset level.