One problem related to crankshaft position sensor has been reported for the 2012 Jeep Wrangler. The most recently reported issues are listed below.
Vehicle stalled while in motion on a highway. This has been a consistent issue for the last several years. I believe it first occurred in 2016. The vehicle will just stall on a city street, in a residential area, or even on the highway. Fuel was not related as it has happened on a full tank of gas or a quarter tank. It was taken to the Jeep dealership on multiple occasions (that has been documented) because of this dangerous hazard, and they were not able to replicate so it was never fixed. I even showed them video evidence 3 times. The vehicle just stalls randomly while driving (in the middle of high speed traffic). The rpm would just go to zero, and when trying to start the car back up, it would try to crank, but would not start. The car would have to be turned off for 5 minutes and then the car would eventually start again. This would occur at least 1/month for several months. The Jeep dealership replaced fuel pump, and checked other components as the engine light never turned on, and they could not find the resolution to this issue. This is a highly dangerous problem and seems to be very common among this model year Jeep, and Jeep continues to claim no fault. Someone could die if their car stalled on the highway with cars going 70+ mph. An experienced driver may be able to maneuver, but certainly an inexperienced driver would not. This vehicle was intended to be for a teenage child, but I could not knowingly give this to them having this unresolved issue. After much research, I believe it is a faulty or defective crankshaft position sensor, but Jeep refuses to acknowledge this and continues to say this is not the issue, yet the car has continued to stall on various occasions still. They should be liable for any serious injury or death that may potentially occur! I will be taking this vehicle to be repaired elsewhere after my own research and troubleshooting.