2015 Jeep Wrangler: sudden loss of power

Filed Nov 1, 2026 · Electrical, Engine · FL

My 2015 Jeep Wrangler has experienced multiple incidents of sudden, unexpected engine shutdown while driving. Without warning, the engine completely loses power, causing the vehicle to lose propulsion and power steering assistance. The dashboard lights and radio remain operational during these incidents. I must turn the ignition off and restart the vehicle, after which the engine starts immediately and operates normally. The vehicle previously experienced similar problems involving additional electrical malfunctions. The fuel pump was subsequently replaced, and the camshafts and rocker arms have also been replaced. Despite these repairs, the engine has unexpectedly shut off approximately two or three additional times. These incidents occur intermittently and without warning, making them difficult to reproduce during dealership inspections. I am concerned that the vehicle could suddenly lose power in heavy traffic or at highway speeds (as it’s done previously even in the pouring rain), potentially resulting in a serious collision. The underlying cause remains undiagnosed and unresolved.

Filed Sep 13, 2026 · Airbags, Engine · AZ

I purchased this 2015 Jeep Wrangler Rubicon new and have maintained and serviced it regularly. At approximately 75,000–80,000 miles, the engine began developing a ticking noise from the passenger/right cylinder head area. The problem progressively worsened. At approximately 100,000 miles, repairs were performed involving the right-side cylinder head and camshaft because of camshaft/valvetrain wear and a persistent cylinder #2 misfire. The right-side cylinder head/camshaft area has required repair more than once. Rocker arms were also replaced, but the underlying problem continued. The vehicle now has approximately 150,000 miles. The engine recently shut down and developed a loud mechanical noise. Upon inspection, significant wear/damage was again found involving the right-side exhaust camshaft/valvetrain, and there are concerns involving the timing chain/tensioning system. A failure of these components while driving could cause sudden engine shutdown or loss of power, creating a safety risk. The vehicle has also developed electrical/safety-related problems. The airbag warning light is illuminated, and the steering-wheel controls and steering-wheel illumination are not functioning. The vehicle was involved in an accident in 2019; however, the engine ticking condition was already present before that accident, although it was less noticeable at that time. Despite previous repairs, the engine/valvetrain problem has returned. I am reporting this because the repeated camshaft/valvetrain failure, persistent cylinder #2 issue, possible timing-system problem, and associated risk of engine shutdown appear abnormal and potentially safety-related for a regularly maintained vehicle.

Filed Feb 17, 2026 · Brakes · AR

ABS Failure cause loss of power and ability to accelerate, dealer states part under engineering review for 2 years

Filed May 2, 2024 · Engine · TN

Check engine light came on for misfire in Cylinder 4. Jeep lost power when on the road

Filed Oct 11, 2020 · Transmission · 51,000 miles · SC

The vehicle violently jumps out of 1st gear (manual transmission) periodically when taking off. From online research I've done, this has happened to several others also. It happens when first trying to take off in first gear. I've had it happen a couple of times when attempting a left turn at a stoplight. I put it in 1st gear and when letting out the clutch it violently jumps out of gear. It is loud and shocking and obviously the vehicle stops moving forward. I have to quickly push in the clutch to attempt to put it back into gear to try to get through the intersection. Luckily I haven't been hit by an oncoming vehicle, but when you lose all power trying to turn left it is a very dangerous situation. I reached out to a couple of dealers, but they claim to not be aware of the situation. Since I see reports on the jeep forums, it is obvious to me that it is a common and dangerous issue that needs attention from the manufacturer before someone is seriously injured.

Filed Jan 18, 2017 · Driver assistance, Electrical · 15,000 miles · CA

I own a 2015 jeep wrangler unlimited 4 door 4x4 automatic transmission. Intermittent loss of power and traction control light comes on.. . I wrote up a report a couple of weeks ago--but I understand the issue better now...so, my jeep basically conks out--often at highway speeds...and re-starts in about 1 second...at least it feels like it conks out--all of the dash lights come on as they do when I first start the jeep...but the traction control light stays on--does not blink and it has remained on since then...also the cruise control will not turn on...I have checked the fuses...and I have run an obdii diagnostic--the fuses are fine and the diagnostic finds nothing wrong I have read that this issue is occuring frequently on jeep renegade and dealership says nothing is wrong. This occurs while the vehicle is in motion, on streets and on highways...while going straight and while turning...

Filed Nov 28, 2016 · Engine · 27,500 miles · NV

I am having difficulties with my brand new purchased jeep wrangler and it has been in and out of the dealership since september with no resolution. This jeep is 19 months old and we bought it brand new from sahara jeep. Despite the fact that it does run the engine suddenly chooses to lose power while I'm driving and accelerating or decelerating is not an option. Not really safe especially when my daily commute to and from work is over 20 miles one way on highway speeds. The engine has stopped about 6 times and two times of those has been on highway speeds which is not a safe place. I have been lucky that when it happened that I have not been rear ended or even worse have caused any accidents. I have continuously brought the vehicle back to chapman and they are unable to find any issues and then now the vehicle is at sahara and I am getting the same answers. Although error lights have come on and I have given the dealerships those they are still unable to diagnose what is making the vehicle engine suddenly stop.diagnostic testing keeps coming up negative. I was given a flight recorder to attach to my jeep to help assess the issue. The vehicle died and I was able to successfully run codes through their recorder (supplied by jeep) and had the vehicle back at the dealership the next day. I was told that their computers were down and unable to read the codes but they did capture something but had forwarded it onto corporate to read. A couple days later with no update I contacted corporate and was told that they were unable to read the codes because their system was also down and I would have to do it all over again.