Engine stalling or failure to start may indicate crankshaft angle sensor failure; Hyundai issued a recall.
2012 Hyundai Elantra Problem Reports
RepairPal Verified 2012 Hyundai Elantra Problem Reports
Report A Problem
If the automatic transmission does not shift properly and the Check Engine Light illuminates, the speed sensors in the transmission may have failed. The sensors are simple and inexpensive to replace.