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john70t john70t is online now
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Join Date: Aug 2001
Location: midwest
Posts: 40,247
(at least 20 years ago):

Drive Cycle completion results were specific to each manufacturer.
(drive at WOT x many times, cruise at x mph at x rpm for x minutes, ec)

And all cycles must be completed to pass OBD2 smog.
Only insiders knew what actually tripped them.

Separate and additional paid software was required for the scanner to scan manufacturer codes..
But only if that scanner was "certified".
__________________
Meanwhile other things are still happening.

Last edited by john70t; 10-21-2021 at 02:43 PM..
Old 10-21-2021, 02:40 PM
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