A recent study found that VOYO with Scan Pro is over 5X more powerful at finding car problems compared to the competition. The study involved hundreds of vehicles including many popular models of passenger vehicles. Study findings include: Standard OBD-II devices could only detect 19% of the available trouble codes. 81% of the trouble codes required advanced diagnostic capabilities. A recent study found that VOYO with Scan Pro is over 5X more powerful at finding car problems compared to the competition. The study involved hundreds of vehicles including many popular models of passenger vehicles. Study findings include: Standard OBD-II devices could only detect 19% of the available trouble codes. 81% of the trouble codes required advanced diagnostic capabilities.