If you’ve ever had the lightning bolt of death flash at you on your dash and send your JK into limp-home mode, the fix may be easier than you realize. Below the drive-by-wire throttle body is a plug-in clip. This can actually become dislodged. When that happens, it will cause the JK’s engine management system to cut power, leaving you dead in the water. Typically, a trouble code will indicate that the throttle body is bad or not reading correctly. Before you drop a lot of money on a new throttle body, make sure that the plug is firmly in place.