A recent study by CarMD.com found that nearly half (49%) of all cars on the road are being driven with one or more dashboard warning lights illuminated, with 20% operated specifically with the Check Engine light on. This is attributed to owners putting off needed repairs because of rising parts and labor costs and extended ownership periods. Ignoring the Check Engine light can cause a car to fail an emissions test and can result in the need for additional repairs. Fortunately, repair shops and many auto parts stores can plug an electronic analyzer into the vehicle’s OBD port that will display alphanumeric trouble codes to help pinpoint engine problems and other issues.