Originally posted by eclipzGST
Actually, they don't car about the saved codes. They just want to know if there are any current ones. CEL on, you fail. CEL off, you pass.

Unfortunately that is also wrong.

Please check your LOCAL or STATE laws regarding the Check Engine Light (CEL) status in determining the pass/fail of the vehicle.

As per Colorado's most up-to-date testing requirements:

"Effective April 1, 2003, an illuminated "check engine" light is no longer a mandatory pass/fail component of the emissions testing process. If the "check engine" light is illuminated, it is noted on the vehicle inspection report each motorist receives at the end of the emissions testing procedure. However, it is an informational tool for the motorist, rather than a reason for failure."