what could cause the operations system not record data needed for emissions testing?
Does the check engine light come on when you first start the car then go out as it normally should or is it not illuminating at all? Check all of you ECM fuses, it is possible that the Keep Alive Memory fuse could be blown, or the teat centers, not like they will admit it, equipment has a problem.
If you've recently had work done and they disconnected the battery the readiness monitors may have been cleared. The computer runs tests on various emissions systems while you're driving. Once these tests have passed the readiness monitors set. This tells them at the inspection station that your car is in compliance with the federal emissions standards for your car's model year. Since your vehicle is a 2000 model you can pass emissions inspection with 2 readiness monitors not set. To set the readiness monitors keep your gas tank between 3/4 and 1/4 full. No more and no less. Drive normally for about a week. If your check engine light does not come on while driving you should pass. HTH. -Jim
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