When the transmission specialists at Certified Transmission scan your transmission they are attaching a diagnostic computer to a terminal in the vehicle. The scanning diagnostic tool communicates with the vehicle's computer to see if any trouble codes are present. If trouble codes are detected the scanner reads the output from various vehicle sensors and feeds that information to the computer. This information is then helpful in determining the transmission system's electrical control system. Certified Transmission uses high-quality transmission diagnostic equipment to help us diagnose the transmission problems of all of our customers in the greater Council Bluffs area.