Scott, I am running a ScangaugeII that is mounted above my rear view mirror so it is constantly monitoring the VX. When the CEL does come on I can read the codes real quick, make sure that it's nothing serious, and then clear them (all on the fly).

Actually, this year when I was out in Moab, Vicki threw seven codes at once so I guess it's not uncommon. Not to scare you, but that was the start of my engine woes, and one of those seven codes was the cylinder three mis-fire code that eventually ended with cylinder three going completely dead and me having to replace the engine. The other six codes dealt with oxygen sensors and the engine running lean during acceleration. Sure would be good if you could remember those codes.