Jeep Wagoneer check engine light comes on

Filed Nov 8, 2026 · Fuel system · VA

I am requesting an investigation into a potential fuel-system safety defect involving my 2022 Jeep Wagoneer 5.7L V8 HEMI, which I purchased brand-new from an authorized Jeep dealership. For several months, I have experienced a persistent gasoline odor inside the passenger compartment. The gasoline smell is also noticeable when opening the hood. I have observed what appears to be fresh gasoline around the fuel injectors. I am extremely concerned about the possibility of a fuel leak, fire hazard, and prolonged exposure to gasoline vapors. I am requesting: 1. A comprehensive inspection of the fuel injectors, injector seals, fuel rail, and fuel lines. 2. An investigation into whether this condition is related to a manufacturing defect. 3. Verification of any applicable recalls or technical service bulletins. 4. Consideration for repair assistance if a defect is identified. 5. Written documentation of the findings. I am reporting this as a potential vehicle safety concern because gasoline leakage near the engine could create a fire hazard. And me and my family has been inhaling for God knows how long problem was going on no engine light at all

Filed Nov 6, 2026 · Electrical, Engine · NH

The check engine light illuminated on my dashboard when I was driving with my family. On 4 separate occasions as I was coming to a stop, the vehicle unexpectedly shut off (driving at about 5 MPH). When it shut off, it shifted itself into Park and the parking brake was auto-applied. On each of the incidents, I was able to manually restart the vehicle by pushing the ignition button and shifting it back into Drive.

Filed Sep 28, 2026 · Electrical · SC

Front parksense sensors not working even after being cleaned. Drivers side seatbelt saying not buckled even when buckled. Needing to rebuckle for it to register. Low-voltage warnings appearing while driving. Multiple dashboard warning lights appearing simultaneously - low-voltage and check engine light. Loss of electrical power while driving (So scary!) The vehicle shifting itself into park when coming to a stop in traffic. Apple CarPlay disconnecting sporadically.

Filed Sep 11, 2026 · Fuel system · TX

Stopped veheicle at construction stop light diverting heavy traffic to one lane. Was first in line at the light and when light turned green I started thru the one lane( total length was probably 3/10 of a mile) with a couple of hundred yeards to go my engine stopped running and I was able to just barely reach the end of the one lane and pull over where the mile of traffic built up behind me could pass. Called wrecker and got towed to nearest Jeep dealer and was told the fuel pump had gone out. Been decades since I had a fuel pump go out in a car. Just glad I was not in heavy [XXX] traffic. That would have been dangerous. Repair invoice says that I reported "engine light came and lost oil preasure". Neither of those alerts came on. The eengine just stopped out of the blue. Otherwise, I am very happy with the ride, comfort and performance of this Wagoneer. Thought someone should know about this event. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 19, 2026 · Electrical, Engine · 52,000 miles · TX

The contact owns a 2024 Jeep Wagoneer. The contact stated that while driving 70 MPH on the interstate, the vehicle stalled. While the contact’s husband was driving at an undisclosed speed, the vehicle shut down, and the driver was able to coast off the roadway. The vehicle was able to be restarted. The check engine warning light turned on and off. The vehicle was taken to the local dealer, where it was diagnosed and determined that the failure was caused by the auxiliary battery. The vehicle was repaired, but the failure recurred. The dealer stated that the failure was caused by the heat. The manufacturer was notified of the failure and opened a case. The failure mileage was approximately 52,000.

Filed Jul 10, 2026 · Driver assistance, Engine · TN

On at least 6-8 occasions car engine has shut off and car is automatically placed in emergency brake. This then requires you to place car in park, then restart vehicle. This happens while driving on interstate and when car slows down for traffic car engine without warning, will shut off, car will then automatically turn on emergency brake forcing sudden stop in interstate hwy traffic. Very dangerous as you have to place car in Park and restart engine. Cars behind you are now slamming on brakes to avoid rear end collision. This has also occurred while sitting at traffic light when again car engine shuts off and has to be placed in park to restart. There is no warning, no warning lights, no check engine after incident occurs and according to dealership no engine codes recorded due to incident. I have left car at dealership on several occasion for several days. I believe it was replicated at dealership but again it registers no codes in engine computer to help resolve issue. When a car traveling down the interstate suddenly shuts down it is extremely dangerous placing my car and family at risk as well as any traveling behind us. Dealership has not been able to resolve issue. They can update software and the car will go several weeks without issue then suddenly you are back to engine shut down again I am second owner of 2024 Jeep Wagoneer S II Carbine. Purchased at GMC dealership. At time of purchase dealership provided maintenance records which showed no issues of engine failure. Unfortunately Jeep is not going to document this issue and does not appear to have a solution. This is an extreme safety concern

Filed May 24, 2026 · Engine · ME

At low speed and at stop the vehicle has shut off and shifted to park. Various warning were present on dash. No CEL was present. The vehicle was able to be started and shifted to drive again.

Filed May 16, 2026 · Engine, Fuel system · SC

My 2024 Jeep Wagoneer L with the 3.0L Hurricane engine began experiencing drivability and warning-light failures at very low mileage and within the first year of ownership. The vehicle was purchased new in October 2024 and experienced its first major drivability/towing event at approximately 10,372 miles. Over the following months, the vehicle experienced repeated check engine light events, shaking, sputtering, hard starting, loss of throttle responsiveness, drivetrain hesitation, and multiple towing incidents despite repeated dealership repair attempts. The most severe safety event occurred in May 2026 at approximately 18,850 miles while traveling on the interstate with my family and young children. Prior to this event, a Florida Jeep dealership documented diagnostic codes P21A0 (Cylinder 5 Air/Fuel Ratio Imbalance) and P0430 (Catalyst System Efficiency Below Threshold) and specifically documented in writing that “the #5 fuel injector is causing the fault” and likely damaged the catalytic converter. Despite this, we were advised the vehicle should be safe to drive home. While driving on the highway the following day, the check engine light began flashing and audibly beeping continuously, the vehicle began shaking aggressively, and acceleration responsiveness deteriorated significantly while traveling at highway speeds. We were forced to immediately exit the highway and abandon the vehicle at a Jeep dealership in Georgia due to safety concerns and fear the vehicle could become unresponsive in traffic. The vehicle has been inspected multiple times by authorized Jeep dealerships in South Carolina, Florida, and Georgia. Earlier repair attempts attributed the issues to software/update-related causes. The Georgia dealership later replaced the catalytic converter but did not directly address the injector-related concern because the condition was not actively reproducible during their inspection despite the prior dealership’s written findings.

Filed Apr 25, 2026 · Electrical, Engine · NY

It seems that when the outside temperature is very warm/hot, when turning the car on or when idling at a traffic light or driving at very low speeds, on occasion the car will abruptly and without warning, shift itself into Park and the emergency brake activates. I took the vehicle in for repair on 10/23/25 and was told there was a "thermostat internal failure" and that the "thermostat assembly" was replaced. I was just recently traveling in Florida ( reside in NY) and the exact same problems occurred with my vehicle which I can only assume was due to the warmer temperatures that my vehicle has not been exposed to since the last repair as I reside in New York. I feel it should be worth mentioning that when turning OFF the auto start/stop button, the problems occurred less frequently but STILL happened on occasion. I've also had 3 other times when the "check engine" light came on. I was told that the first 2 were related to software updates with the transmission. On the other occasion, a "valve body" was replaced. I'm unsure if any of these were related. I've also had to replace the auxiliary battery but I don't think that's related so I didn't upload that file. Although I'm taking the vehicle to be repaired today, I took it in on 04/14/26 because the check engine light came on while in Florida when the car shifted itself into Park and the Emergency Brake was activated. The check engine light almost never comes on when this happens which I was told makes it difficult to diagnose issues. I didn't know how long this info is stored so I took the vehicle in upon returning to NY and was given a Summary Report after they hooked up a scanner. I couldn't get an appointment until today

Filed Mar 16, 2026 · Electrical, Engine · IN

On 10/27/25, the thermostat on my wagoneer exploded. It was supposedly repaired on 10/30/25. I read in the wagoneers forum that the thermostat is a common issue, but it could be the result of engine problems. On 2/4/26, I took my vehicle in for a routine oil change. I didn't drive the vehicle for a few days. On 2/7/26, I was driving and received an Error Message stating Max Engine Oil Level Exceeded. Immediate Service required. I returned it to the dealer to fix that issue. On 2/15/26, I noticed that my engine sounded louder than normal and by 2/16/26, the check engine light was on. On 2/18/26, I received an error message saying the engine temperature was too hot. I took it back to the dealership where it is today. I believe the wagoneers have faulty engines that need to be recalled.