On 9/20/2015 9:12 AM, Scott Dorsey wrote:
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).

They look for the light on the dashboard that indicates codes have been
logged.

In some places they always use the scanner to make sure, for instance,
that the ECU wasn't reset immdiately before taking the car in for
inspection. In some places they do not.

Well in California they definitely check via the OBD-II port. I had
replaced a battery and there were no dashboard lights indicating
anything. The first thing they did was to do a scan for codes.

The number of pending codes that is allowable varies by year of
manufacture. A good shop will tell you the drive sequence to clear the
pending codes for each model. A bad shop won't even know this information.