Assuming MIL light works and ECM doesn't have a "Performance/Custom Chip..."
Should pop a code but depending where/how you drive may not show easy or often.
ECM doesn't trip several codes unless meet X error over Y time so driving in city maybe harder to trip then driving anywhere that keeps speed higher then 35mph or more for 10 minutes to half hour.
If ECM command X function, "timer" starts counting, if you stop or slow down and ECM disables/ignores X then counter is reset for next use of X.
24 VSS fail is one like that too. You unplug VSS and error may trip at "random" distance/time miles away w/o ECM reading speed. Plus even then the check engine light often only blinks, not on forever or even a few minutes.
44 lean and 45 rich is often same way.
Even Weather can affect tripping these two because often involves MAT/ACT sensor.
Example: Read MAT in my Cave,
DIS Ignition------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
