The <CHECK> indicator for My 1998 Honda Accord comes on for a few days. According to the Manual, It indicates one of the engine's emissions control systems may have a problem. ANother cause could be a loose or missing fuel fill cap if refueled the car recently. I did refuel my car before the indicator came on. But I tightened the cap and it sould turn off after three driving trips. Now 5 trips have been taken, It still turns on all the time. Any one got the same problem? By the way, I tested my car one month ago, including transmission and engin system, emission test. Everything works fine.