What is check dual error

Hi, I'm one of the auto experts on RepairPal's Car Genius team! I’d love to assist, but I’m not sure I’m understanding your question. It may be a typo, but I am unsure of what a Check Dual Error is, or what you mean when asking for the Box location. If you’d like to give us a call perhaps we can assist a little better and get some clarity on what you are needing assistance with. If you need any further advice or would like help finding a trusted RepairPal shop in your area or even getting an appointment booked, please feel free to call us at 877-913-1554 or check out https://repairpal.com/certified