Two problems related to automatic transmission control module have been reported for the 2014 Jeep Wrangler. The most recently reported issues are listed below.
Following a mandatory pcm flash recall, I've been having trouble with my '14 Jeep Wrangler's automatic transmission. It will intermittently not upshift under heavy acceleration. Instead, the engine revs to 4k, and it will stay in the gear. Only if I let off the gas and allow it to reset, then gradually accelerate will it work properly. The dealership and Jeep have not been able to figure out the issue, having replaced the entire transmission, pcm, and ecu, as well as numerous other parts and sensors. I fully believe this is computer software related, but the manufacturer is refusing to acknowledge this as a potential issue. For the longest time, I was not able to get a dtc code, but most recently found a stored one that appears to direct the issue to the can-bus communication issue. Attaching screenshot.
The cel (check engine light) or mil has been turned three times (dtc code p2099). The dealer has not found the problem, the dealer review the vehicle and all is ok. The dealer changes the pcm (powertrain control module), but the problem continues, the cel (check engine light) light has become a turn.