yesterday while driving for no apparent reason my CEL came on, there were no noises or anything to alert me of what may have tripped it. then driving to work this morning it just went off. Can I still get the code(s) read if it isn't on? I'm going to do a 2400-mile round trip drive to Georgia on tuesday so I was curious if I should be concerned over this and if the codes are still stored for retrieval. Thanks!
FYI two days prior I just had the oil and transmission fluid changed. Car just turned 77,777 mi. on the way into work
