On Sun, 20 Sep 2015 07:56:20 -0700, sms
wrote:

On 9/19/2015 10:51 PM, Ewald Böhm wrote:
On Sat, 19 Sep 2015 05:30:45 -0400, Steve W. wrote:

How do you figure that "almost no states use OBD" testing. In fact most
of the states do not use a dyno any longer.

I just had mine tested, in California, and they used a dyno.
No OBD hookup whatsoever.

How did they check for pending codes if they did not use a code scanner?
You can't pass with more than two pending codes (one on some years).

That shop would be shut down by the state if it was found that they were
passing cars without checking for pending codes.
In ontario the testers are directly connected to a central computer
and it is virtually impossible to go from stem 1 to step 3 without
completing step 2 first.

A number of years back, some crooks were running a "good" vehicle
through the test 5 or 6 times, entering the Vin for one that would not
pass. They made changes to the system that prevented that pretty
quick.