Problem passing smog in CA
#1
Audiworld Junior Member
Thread Starter
Problem passing smog in CA
My 2001 tt will not send communicate with the smog machine. Has anyone had his problem or know of a fix for it? I need to get it smogged so I can register it.
Thanks
Thanks
#2
AudiWorld Super User
A good shop visit would probably be best but someone could have disconnected or cut something which is easy to diagnose using standard automotive electrical troubleshooting techniques.
#3
Audiworld Junior Member
Thread Starter
I was also told because the battery died that it reset the ECU. And that I need to drive it for awhile at 55mph or above to get the ECU working again. Is that true? Hopefully that's true cause that will be a much cheaper fix than taking it to a shop.
#4
AudiWorld Super User
Do you have an aftermarket radio?
There's a problem with some harnesses shorting the K-line to 12 volt. It will block communications.
The other common failures that block the K-line are the cluster, ABS module and comfort / alarm module. Unplug them one at a time to find the culprit.
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