Tuesday of this past week I began seeing the infamous "CheckEngine" light on my '99 A6 (just turned 100K). It came on and stayed on solid Tuesday, Wednesday and Thursday.
Friday, Saturday and today (Sunday) it's not appearing. "Physician heal thyself" -- maybe.... I know I can neglect it (since it has gone away), but should I, or better can I. And of course the answer is of course you can ignore it - like anything else, But the Q is: If the Light goes away, do the problem(s) go away? TIA<