Table 1 shows 17 common engine and engine cooling related problems of the 2012 Jeep Wrangler. The number one most common problem is related to the engine and engine cooling (84 problems). The second most common problem is related to the engine clicking and tapping noises (19 problems).
The contact owns a 2012 Jeep Wrangler. The contact stated that while driving at 20 mph, the check engine warning light illuminated. The local dealer was contacted, but the vehicle was not diagnosed or repaired. Read details...
The lifters (headers) have gone bad. Incredible ticking noise from the engine in drive and idle. As rpms increase the ticking is louder. The only way to fix is to replace the headers. I have read a multitude of complaints on the NHTSA page regarding this and additional complaints all over Jeep Read details...
Cam sensor failed. Check engine light and traction control light appeared. Replaced and same problems occurred. May be wiring or cam/rocker issues. Read details...