2021 Jeep Wrangler: check engine light

Filed Nov 2, 2026 · Electrical · OH

The vehicle has lost power multiple times and have been at the dealership now twice due to it first time the check engine light went off before the dealership could find an issue and they couldn’t find anything second time after losing power on the expressway. They check engine light came on for a few days and went off by time my appointment at the dealership. The determined the PIM had issues and are replacing it.

Filed Sep 28, 2026 · Brakes, Electrical · CT

Manufacturer corporate and its dealer network are failing to provide a safe, timely remedy for a vehicle subject to high-voltage battery fire recalls (Recall 68C / the federal safety agency Campaign 25V‑741) and a power steering fire recall (Recall 21D / the federal safety agency Campaign 21V‑363). The vehicle has an active check engine light, a disabled hybrid propulsion system, and has now suffered a catastrophic electronic brake booster failure on a college campus, rendering the brake pedal rock-hard like compressed air and leaving the vehicle unable to stop normally. This is a direct, recurring safety failure of Diagnostic Trouble Code DTC C0580-00 (Brake Booster Motor Circuit Low), which was officially documented by a franchise dealer in June 2026. The vehicle also has an extensive history of severe manufacturing defects, including an extraordinary 72-day out-of-service period at a dealership in Miami, FL for a disintegrated rear axle bearing that destroyed the differential housing, alongside advanced structural body rust on hinges found to be unsafe. The manufacturer was formally notified of this active safety emergency and loss of vehicle utility on Sunday, September 27, via email and corporate phone logs, but failed to respond or secure the vehicle. We are formally demanding an expedited manufacturer repurchase/buyout due to total loss of vehicle utility, structural housing conflicts under 'park outside' directives, and severe physical safety liability.

Filed Sep 23, 2026 · Acceleration, Fuel system · TX

My vehicle is currently in the shop getting the High voltage battery replaced for the second time due to a code showing battery voltage variation as well as getting the latest 21D recall completed. The Jeep currently has about 90,000 miles and has received all other recalls. The jeep no longer functions or performs like it did when I took ownership in February of 2022. It routinely loses power when trying to accelerate onto Highways or into traffic lanes or up hills. You can push the pedal down and there is a noticeable delay of several seconds before the vehicle starts to accelerate. The car no longer will stay in selected "Electric mode" and will instead kick the engine on at random times or take the vehicle out of "electric" and into "Hybrid". When at slow speeds (under 15MPH) in traffic the jeep lurches and slows, unable to maintain a constant speed. Also I have no way of proving that the overall power has been reduced through programming but the acceleration and advertised 375HP/470lb-ft does not seem to have the same feeling that it once did when first purchasing this vehicle. I believe there is a dangerous ongoing safety issue possibly with the programming, as well as the HV batteries. There were no warning lights coming on during the course of the last several months until I had a CEL for battery voltage variation and then it was taken to the dealership on the same day. There has been no communication with Jeep/Stellantis other than them issuing an unlimited mileage warranty on the HV battery. They seem to be replacing it with the same design, and therefore not addressing the issue only putting a band aid on the problem.

Filed Aug 17, 2026 · Transmission · NH

Acceleration lag: either bucking or temporary loss of motive power when attempting to pull into traffic has almost caused us to be hit several times. We had the problem almost immediately after purchase, but the lag was short and the Jeep would leap forward and back tires would squeal which caused the back tires to wear quickly compared to front. The bucking and loss of power while accelerating became dangerous after I took to the dealership in Feb 2026 when they also did recall 68C related to the battery. We stopped charging it completely and still had the issue. Took back to the dealership in March 2026 and they said they could not replicate issue. Tried to schedule an appt last week and they never got back to me. We have avoided several accidents so far but I am now afraid to drive it. Assuming these are unrelated but just in case: at 10k miles the check engine light came on, and I couldn’t add ANY fuel (automatic shut off happened immediately) and the fuel cap wouldn’t open. Foss Motors wrote: "CHECKED FOR CODES IN SYSTEM. VEHICLE HAD CODES P2451 FUEL TANK ISOATION VALVE A STUCK, PO4EC EVAP SYSTEM LARGE LEAK DETECTED AND P04EE EVAP SYSTEM SMALL LEAK DETECTED. PERFORMED EVAP SYSTEM SMALL LEAK VERIFICATION TEST. TEST EVAP SYSTEM AND FOUND ISOLATION VALVE STICKING. COMPLETED REPLACEMENT OF ISOLATION VALVE. Replaced fuel filler tube 68413327AD and 68412848AC fuel cap." In Sept 2025 (~45k miles) - Check engine light came on again soon after with errors: PO4EC EVAP SYSTEM LARGE LEAK DETECTED and P04EE EVAP SYSTEM SMALL LEAK DETECTED. They could not find leak or issue.

Filed Jul 14, 2026 · Acceleration, Electrical · MN

While driving from [XXX] to [XXX], the vehicle experienced two sudden loss-of-propulsion events at highway speed. During the first incident in downtown [XXX], cruise control disengaged, the transmission abruptly downshifted, and the accelerator became largely unresponsive. The vehicle rapidly lost speed in traffic, and another vehicle nearly rear-ended me because I could not maintain speed or accelerate. The engine remained running, but the vehicle appeared to enter reduced-power or limp mode. I pulled over, shut the vehicle off, and restarted it. Normal throttle operation temporarily returned. The check-engine light and “Stop/Start Not Available” warning remained illuminated. After approximately three hours of otherwise normal driving, I activated cruise control again. The same condition immediately returned: cruise disengaged, the transmission downshifted, throttle response was lost, and the vehicle rapidly decelerated. Restarting again restored normal operation. This unexpected loss of propulsion created a serious collision risk because the vehicle abruptly slowed in moving highway traffic without allowing me to accelerate out of danger. The problem appears directly associated with cruise-control activation, although the exact mechanical or electronic cause is unknown. The vehicle has approximately 40,300 miles, was purchased as Jeep Certified Pre-Owned, and had a new OEM battery installed by an authorized Jeep dealership shortly after purchase. I am requesting that the federal safety agency investigate similar reports involving sudden throttle loss, abrupt downshifting, reduced-power operation, or loss of propulsion at highway speeds. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 12, 2026 · Electrical, Engine · CA

Glendale Dodge (CA) is actively using Federal Fire Risk Recall 68C to fraudulently conceal a separate, critical High-Voltage hardware failure on my 2021 Jeep Wrangler 4xe. Upon intake, my vehicle’s internal VIP diagnostic scan showed an active P0E15 code (Electric Coolant Heater Failure). Per Stellantis Technical Service Bulletins, this code indicates a severe failure requiring a physical hardware replacement to ensure the high-voltage system operates safely. To avoid performing this costly warranty repair, the dealership deliberately falsified the diagnosis on Final Invoice #31349. Under Line C (Customer States Check Engine Light is On), the dealership officially recorded the cause and correction as: 'DUE TO RECALL MODULE UPDATES AND BAD BATTERY.' This is an affirmatively false written diagnosis. A dead 12V battery and a recall software update do not cause, nor do they resolve, a P0E15 High-Voltage Electric Coolant Heater failure. The dealership lied on the legal invoice to scrub the hardware defect from the record. They then applied the 68C software patch as a smokescreen, falsified the 'Date Out' to 12/26/2025 to prematurely close the federal recall ticket, and attempted to return a vehicle that remains mechanically compromised and unsafe. This is intentional warranty fraud masking a high-voltage system failure. Stellantis and its authorized repair facility are refusing to properly remedy the vehicle. The vehicle is currently held at the dealership pending an active fraud investigation by the California Bureau of Automotive Repair (Case #6596-WS4PV6).

Filed Jan 12, 2026 · Electrical, Engine · OR

My engine light came on shortly after my first warranty oil change August 23,2025 at the Tonkin Hillsboro dealership. During my 2nd warranty oil change January 9,2026 at Tonkin Hillsboro dealership I let them know my engine light came on after their last service and they wanted to charge me the diagnosis fee. After continued discussion learned they already checked the code indicator and mentioned possible gas cap seal and it was not fixed. Today I received an Updated Carfax of my recent service and saw a recall for my vehicle dated on October 30, 2025 re: Urgent Fire Risk When Parked. the federal safety agency Recall Number 25V741000 Manufacturer Recall Number68C the federal safety agency Recall Number25V-741 Recall StatusRecall Incomplete This safety was not checked, fixed or completed within the consumer regulatory requirement of recalls while my vehicle was in service and in their observation. If the recall notice is dated October 30, 2025, there should be no reason for an oversight in providing clear communication and corrective action immediately while the vehicle was in service on January 9,2025 and communication/information before I picked up the vehicle and drove it off the lot. This is a certified vehicle that so far has not given me any confidence of proper dealership quality and car for vehicle safety and consumer co concern.

Filed Jan 2, 2026 · Engine, Fuel system · NY

Vehicle started and put in reverse. after backing up approximately 15 ft, vehicle put into driver and once accelerator was pressed, vehicle stalled. Tried to restart, engines turned over but stalled again after 1 second. Waited 10 seconds and tried to restart again, stalled again 1 second after turnover. Turned vehicle completely off, opened door, waited 30 seconds, tried starting again and system attempted to stat for 5-10 seconds (push to start ignition so I had no control over how long it tried this), but engine would not turn over. Vehicle also could not be shifted out of park (turned vehicle off and tried to put in “On” position without ever depressing the brake). Vehicle now stuck in driveway and unable to be moved. Acting like an issue with the fuel pump, which is a recall that was announced for some vehicles of this make and model, but the federal safety agency check shows no open recalls on vehicle. No warning lights or check engine lights came on.

Filed Dec 11, 2025 · Engine · 52,000 miles · MA · fire

The contact owns a 2021 Jeep Wrangler. The contact stated that while driving at an undisclosed speed on the highway for 45 minutes, there was an abnormal odor of chimney fire, which continued while at the stop sign. The front passenger occupant noticed there was smoke from underneath the hood. While pulling over, the steering wheel locked up, and the occupants exited the vehicle. The engine warning light was illuminated. The damper had previously been replaced, but the vehicle was well-maintained. There were no reported injuries, air bag deployment, or crash. The fire department was able to extinguish the fire. The police were called to the scene, but there was no police report. The vehicle was towed to a tow lot. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 52,000. The VIN was not available.

Filed Dec 9, 2025 · Engine · AL

Jeep has a design defect in vehicles equipped with the 2.0L turbocharged engine where the coolant reservoir is positioned directly adjacent to the turbocharger and turbo heat source with insufficient heat shielding. Due to the constant high heat exposure, the plastic coolant reservoir and/or connecting plastic fittings degrade, warp, and become brittle over time, eventually leading to coolant leaks, erratic coolant temperature readings, and/or sudden coolant loss. This failure often occurs without warning, and many vehicles do not initially trigger a check engine light. In my case, the vehicle exhibited intermittent coolant temperature readings, abnormal fan operation, and heating inconsistencies before the leak was discovered. Multiple repair attempts are frequently made before the root cause is identified. Mechanics often replace components such as the thermostat housing, coolant temperature sensors, or related assemblies, not realizing the coolant reservoir heat damage is the underlying cause. This results in unnecessary repairs, significant consumer expense, and extended vehicle downtime.This defect poses a serious safety risk, as coolant loss can result in: •Engine overheating •Sudden loss of power •Potential engine failure while driving •Increased risk of breakdown in traffic or unsafe driving conditions Numerous owners report similar failures, indicating this is not an isolated incident but a widespread design flaw affecting Jeep vehicles equipped with the 2.0L turbo engine.Jeep has not issued a Technical Service Bulletin or recall addressing the placement of the coolant reservoir or providing guidance to technicians to inspect for heat-related degradation in this area.I am requesting that the federal safety agency investigate this design defect and require Jeep to issue a Technical Service Bulletin or recall addressing this. The vehicle was properly maintained and not modified and The issue occurred at relatively low mileage.

Filed Dec 8, 2025 · Electrical · NC

Fire risk. Recalls for software update. I’ve done the software update once already after my jeep wouldn’t start and had to be towed to the dealership. My engine light came on again along with a stabilizer bar warning light. The dealership said they need to do another software update again, but that there’s still no real fix for the issue. I’m dropping it off again tonight. The fact that I have to do this and to be told there’s still no real fix is ridiculous. I’d really like to get rid of my jeep at this point, but I feel stuck because who’s going to buy it with all these unresolved issues?

Filed Dec 7, 2025 · Electrical, Engine · NY

I purchased (traded into) a 2021 Jeep Wrangler on October 31, 2024. The vehicle already had an open safety recall (68C) at the time of purchase. Shortly after, the vehicle began experiencing severe and dangerous safety failures. While driving, the Jeep suddenly goes into “turtle mode,” loses power without warning, and drops to 7–12 mph in traffic. The engine light comes on and the vehicle becomes almost undrivable. This creates an extremely hazardous situation where I could be rear-ended or left stranded on the road. This is a serious safety risk to me and to other drivers. I contacted Jeep/Stellantis Recall Customer Care to report the issue. Only after calling did I receive an email telling me I must pay out of pocket for a rental vehicle, even though the vehicle is unsafe and the recall remedy is not available. I immediately responded saying I cannot pay upfront. Since November 25, Jeep/Stellantis has ignored my messages completely. The vehicle remains unsafe, undrivable, and under a recall with no available parts. Jeep has refused to provide a direct-billed rental or any safe alternative transportation. I have been left without a usable vehicle while the manufacturer fails to communicate or offer assistance. This is a major safety defect, and the lack of manufacturer response puts me in danger. If this vehicle loses power in traffic again, it could cause an accident. I am requesting the federal safety agency intervention because Jeep/Stellantis is not addressing this safety issue, not providing a remedy, and not honoring their recall responsibilities. Symptoms: •Sudden power loss •Turtle mode activation •Speed dropping to 7–12 mph unexpectedly •Engine warning light on •Vehicle unsafe to operate Manufacturer Failure: •Recall 68C remedy unavailable •Denied direct-billed rental •Required me to pay upfront for rental •No response to my communication since Nov 25 •Left me without transportation