2015 Jeep Wrangler engine problems

ENGINE

In October 2025, the Anti-lock Breaking System (ABS) Brake, traction control, downhill control indicators all illuminated. This also impacts cruise control and acceleration from a stopped position. My repair technician placed an order for the necessary ABS control module with MOPAR. The expected delivery date was August 2026. In August 2026, MOPAR informed them the part was on a nationwide back order with no ETR for resolution. I placed an order for the ABS Module in August 2026, with a suggested date of delivery in two weeks. MOPAR has advised us today 18 August 26, there is no ETR for this critical component to be available. Anti-lock brakes are federally mandated in all vehicles 2012 and beyond. Not having this module disables multiple required safety components in the vehicle not just ABS and puts the consumer, other drivers at risk.

NHTSA complaint #11757774 — an unverified report by a vehicle owner.

ENGINE

Lifters ticking noise causing damage to cam shafts.

NHTSA complaint #11749831 — an unverified report by a vehicle owner.

ENGINE

am the original owner of this 2015 Jeep Wrangler, which I purchased new. The vehicle has been properly maintained according to the manufacturer's recommended maintenance schedule. I have records documenting routine maintenance, including regular oil changes. At approximately 75,000 miles, I began hearing a persistent ticking noise from the engine. Because I was concerned that the noise could indicate a mechanical problem, I scheduled an inspection with an authorized Jeep dealership. The dealership diagnosed the vehicle with a failed rocker arm that caused damage to the exhaust camshaft. The dealership advised that the intake camshaft remained in good condition, indicating that the failure was isolated to the exhaust valvetrain at the time of diagnosis. This type of internal engine failure at approximately 80,000 miles was unexpected for a properly maintained vehicle. My concern is that if this condition is not diagnosed promptly, continued operation could result in further engine damage, loss of engine performance, engine misfire, or potential engine failure while the vehicle is being driven, creating a potential safety hazard. While researching this issue after receiving the diagnosis, I found numerous reports from other owners of vehicles equipped with the 3.6L Pentastar engine describing similar rocker arm and camshaft failures across Jeep owner forums, Reddit, Facebook owner groups, and YouTube. Although I understand there has not been a recall for this condition on my vehicle, I believe the number of similar owner reports suggests the issue may warrant further review. I am submitting this complaint so that NHTSA is aware of the issue and can evaluate whether similar failures are occurring with sufficient frequency to justify additional investigation.

NHTSA complaint #11747302 — an unverified report by a vehicle owner.

ENGINE

I purchased a used 2015 Jeep Wrangler from a dealership in New York. At the time of sale, the vehicle had an open urgent safety recall (19V-018) for a defective Takata passenger airbag inflator. This recall was never disclosed to me by the dealership prior to or at the time of purchase. The recall advisory was noted on the NYS inspection report conducted the same morning the vehicle was sold to me, but was not communicated to me in any way. I discovered the open recall after experiencing repeated mechanical failures following purchase. Four days after purchase the vehicle overheated and had to be towed — the coolant system was found to be completely empty. An independent licensed mechanic subsequently inspected the vehicle and stated on record that the mechanical defects appeared to be pre-existing conditions that existed prior to the sale. The vehicle currently has an unrepaired Takata airbag inflator which the manufacturer has identified as capable of exploding and sending metal fragments into the vehicle interior at high speed, risking serious injury or death to occupants. The vehicle is available for inspection upon request. The recall remains unrepaired. The dealership was contacted and a manager verbally acknowledged they did not disclose the known defect prior to sale.

NHTSA complaint #11727666 — an unverified report by a vehicle owner.

ENGINE

ABS Module error: C2200 causes jeep to go into limp mode when accelerator is pushed hard. near miss on collision, lack of abs causes skidding and possible loss of control.

NHTSA complaint #11723384 — an unverified report by a vehicle owner.

ENGINE

While driving on the highway, my Jeep completely shut off and I lost control of everything the staring and I have no clue why it just shut off. I’m worried if I drive it I could do this while I’m on the highway and the third lane and I may end up in a collision.

NHTSA complaint #11721928 — an unverified report by a vehicle owner.

ENGINE

2015 Jeep Wrangler with 3.6l Pentastar Engine having repeated engine failures associated with the use of possibly defective repair parts / defective cylinder head repairs / recurring cylinder 6 misfire alerts..

NHTSA complaint #11697372 — an unverified report by a vehicle owner.

ENGINE

I am having my oil cooler housing replaced once again after having replaced only 4 years ago. I am on my 3rd radiatior and 3 thermostat. This jeep is not driven hard or offroad and has been maintained in excellent condition. This engine is junk and not safe. I have not had warning lights only oil drippings in the driveway yet the oil level doesnt seem to change. If not caught this will cause your engine to lock up.

NHTSA complaint #11681691 — an unverified report by a vehicle owner.

ENGINE

On a trip on 7/3/2025 out of state the engine failed due to a blown head gasket , which is the third engine related problem I have experienced . Other issues include: Broken exhaust valve spring, cracked oil filter housing. With being the original owner and having only 84,000 miles I feel this has to be an issue Jeep is having with my engine 3.6 Liter V6. I am lodging a formal complaint to hopefully, have help with the $11,000 quoted price to replace my engine. Thank you

NHTSA complaint #11673939 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at 40 MPH and depressing the accelerator pedal, the vehicle lost motive power and stalled. The check engine warning light was flashing. The vehicle was taken to the local dealer, where it was diagnosed that the oil pressure sensor circuit had failed and needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken to two other local dealers, Marino Chrysler Dodge Jeep Ram (5133 W Irving Park Rd, Chicago, IL 60641) and Dodge Parts Overstock Parts (2875 Mall Hill Dr, Lakeland, FL 33810), where it was diagnosed the oil pressure sensor circuit had failed and needed to be replaced. The oil pressure sensor circuit was replaced, but the failure persisted. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 107,272.

NHTSA complaint #11672750 — an unverified report by a vehicle owner.

ENGINE

The component that is failing is unknown. Unknown to mechanics because a code is not thrown. I can be driving in my neighborhood, on the highway or coasting and my Jeep stalls. Everything else is working, radio, heater just the rpm goes to zero. I have to quick turn on my hazards and prey I can coast to safety. Once out of traffics way and I am in park my car will restart no problem. my safety is at risk because it will happen on the highway. My mechanic has checked all the sensors, fuel pump and filter, battery cables, alternator you name it its been checked or replaced. I have read Jeep forums to see what others are saying and there are over 100 other jeeps that have this same problem. People are spending thousands of dollars to change out computers several times for it to keep happening and jeep has no answers. It first happened two years ago, then about one time 6 months later and then 6 months are that it happened again. But recently its been happening everyday. No matter it I am coasting, on the highway or in my local area it will stall. No warning lights no engine lights just no response in the gas peddle when it stalls. This is going to be super dangerous if other jeeps keep stalling on the highways. Check out forums it happens all the time. Jeep dealers just want to keep changing sensors for 200 here and there.

NHTSA complaint #11653056 — an unverified report by a vehicle owner.

ENGINE

Ticking noise in engine from lifters and faulty pin. Potential failure for cams.

NHTSA complaint #11651462 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving 30 MPH, there was an abnormal sound coming from the engine. The check engine warning light was illuminated. The vehicle was taken to a dealer, who determined that there was a misfire in cylinders #1 and #2, and the right intake valve needed to be replaced. The vehicle was not repaired. The vehicle remained at the dealer and had not been driven since. The manufacturer was made aware of the failure. The failure mileage was approximately 86,096.

NHTSA complaint #11651347 — an unverified report by a vehicle owner.

ENGINE

So I was driving into work on the interstate yesterday around 10am, and my jeep started to die out of nowhere. I almost got in a wreck. I was able to pull over on the side, and the engine light came on and I took it straight to the auto mechanic. I guess my oil filter housing unit is bad and is causing my oil to leak. The auto mechanic said this is a KNOWN issue in the design flaws of Crysler vehicles including my jeep wrangler with the 3.6L engines. This could have gone much worst for me, and after doing some more research this is happening in their 3.6L Engines and is a confirmed design flaw. The issue is reported to affect vehicles with the Pentastar V6 engine, including models like the Jeep Wrangler, Chrysler 300, and Dodge Charger, from around 2013 to 2021. They are saying it's not a safety issue, yet I almost caused an accident as my jeep started to die while driving 70 mph. This needs to be recalled asap!!! It more than likely has already caused accidents.

NHTSA complaint #11649293 — an unverified report by a vehicle owner.

ENGINE

Lack of oil in the heads after sitting for a while results in dry valve train at start up and over time results in premature failure of hydraulic lifters not pumping up and rocker arms and cams being dry until oil reaching these parts.

NHTSA complaint #11642971 — an unverified report by a vehicle owner.

ENGINE

Same problem that I'm having is happening to thousands of people. People are either swapping engines ($20k+) or fixing for ($5k+)Sand debris left in 3.6 engine at time of manufacturing that causes cooling system repair and eventually engine head replacement because of misfire warning. My jeep has 60k miles. Have already replace radiator 2 years ago and now I'm getting misfire on cylinder 2. Ran compression test on cylinder 2 . Only 80 psi showing on gauge compared to 150 psi in the other cylinders. Head is bad. There has been a extended warranty on older jeeps with same engine to fix the issue but, not for 2014 and up. Which makes no sense. PLEASE HELP

NHTSA complaint #11641340 — an unverified report by a vehicle owner.

ENGINE

OPEN ENGINE BLOCK, LIFTER, SPRING, MANY SMALL PIECES

NHTSA complaint #11641057 — an unverified report by a vehicle owner.

ENGINE

while driving at an 50 MPH speed, the check engine warning light illuminated and flashing continuously. The vehicle was not in drivable condition since it was unusually vibrating while either standing or driving at very low speed. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve, cylinder head or crack on the casting causing this issue. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.

NHTSA complaint #11629895 — an unverified report by a vehicle owner.

ENGINE

Cylinder 4 misfire

NHTSA complaint #11627128 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2015 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that there was a cylinder #2 misfire, and that the valve needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 88,000.

NHTSA complaint #11626693 — an unverified report by a vehicle owner.

ENGINE

2015 original owner, developed misfire cylinder #4 P0304, replaced coils, plugs, injectors, harness on that side. Misfire still present, noted others have reported issues with cylinder head (valves, cams, rockers). Engine has a slight tick, found no recalls on NHTSA site except for 2014 versions with same engine for this exact issue.

NHTSA complaint #11617255 — an unverified report by a vehicle owner.

ENGINE

The engine has a known failure causing a cylinder misfire that is resolved by replacing the cylinder heads. This is a known issue to FCA and caused an extension of the powertrain warranty for the 2010-2014 models but does not cover later engines, that are still experiencing the same issues. The covered years needs to be extended to 2018 or beyond and all out-of-pocket repair costs should be refunded to the consumer.

NHTSA complaint #11613740 — an unverified report by a vehicle owner.

ENGINE

My Jeep has the pentastar 3.6l engine and has recently developed what is known as the “pentastar tick”. This is caused by a design flaw with the valvetrain, specifically the lifters/rocker arms that causes excessive wear which leads to the tick, which may then lead to engine failure and loss of control. This is a very common problem with the 3.6 engine and FCA should be held responsible for the safety recall. FCA has already acknowledged the problem on 2012-2014 engines, and extended the warranty, but not on the later engines. Please look out for the consumer and hold them accountable.

NHTSA complaint #11601640 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2015 Jeep Wrangler. The contact stated while driving at an undisclosed speed, the vehicle unexpectedly stalled with the check engine warning light illuminated. The vehicle was taken to an independent mechanic; however, the contact was unsure about the diagnostic result. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

NHTSA complaint #11601011 — an unverified report by a vehicle owner.

ENGINE

I was driving and all the dash board lights came on and it started warning beepings then it would not go over 35mph The ABS module was affected because it has a defective eyelet in the TIPM Module wiring connector that allows water to seep in I had a level 2 system testing done to find the defect. Jeep is aware of the problem because when I tried to order a new ABS module I was told it was not available because they are re-engineering it.

NHTSA complaint #11600617 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2015 Jeep Wrangler. The contact stated while driving at approximately 55 MPH, the vehicle jerked. The check engine warning light illuminated. The vehicle was pulled to the side of the road, and was restarted; however, the failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed with a coil pack failure. The vehicle was not repaired. The contact stated that the vehicle was taken to several different independent mechanics however, the cause of the failure was not yet determined. The vehicle was not repaired. The vehicle was taken to the dealer where it was diagnosed with leakage on the left cylinder. The vehicle was not repaired. The contact discovered Technical Service Bulletin: 09-002-14; however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 84,000.

NHTSA complaint #11587421 — an unverified report by a vehicle owner.

ENGINE

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

NHTSA complaint #11586625 — an unverified report by a vehicle owner.