SJblackLT-1

waz up! havin some trouble with my lt-1 was wondering if anybody can help. i connected a obd scanner to it and it gave me this code P1657. i was told its driver moduel not enough voltage? ima be honest i dont know wtf it means! please help with some guide or something. also my car has a fat leak like air leak or miss fire but ive checked my header bolts, spark plugs, and spark plug wires and cant really figure out what it could be. some help will be greatly appreciated. thanks!!!!