One problem related to check engine light on has been reported for the 2003 Kia Motor RIO. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Kia Motor RIO based on all problems reported for the 2003 RIO.
While driving down the road with my two year old in the car, the engine seized up and stalled. The car currently wont start and had to be towed to the repair shop. However, we just had all of the routine maintenance to the car less then 300 miles prior to the engine seizing. The check engine light never came on. As of today, they don't know what the problem is except that the engine seized. There was no prior incidents with the car and it was always serviced on time.