So my wife's 2012 jk threw a check engine light recently. Little over 50000 miles. Guy at auto part store used code reader and it said misfire cylinder 6. Per his suggestions he said could be a bad plug or coil. So i changed all plugs and replaced cylinder 6 coil. Light came on again after about 10 miles. Anyone here have the same code pop up before and if so what other possibilities could it be. Any help is much appreciated.