2025 Ram 1500: check engine light

Filed Nov 5, 2026 · Electrical, Engine · 3,848 miles · SC

The contact owns a 2025 Ram 1500. The contact stated that while driving at night with her spouse, the check engine warning light illuminated, the vehicle experienced a loss of motive power, and the engine required approximately 15 minutes to shut off. The vehicle was taken to the dealer on several occasions for recall remedies and software updates; however, the failure persisted. The contact stated that the check engine warning light illuminated again, and during ignition startup, the vehicle jerked, revved, and exhibited hesitation. The contact stated that the flex fuel system experienced an operational malfunction. The dealer was informed of the failure and deactivated the flex fuel system. The dealer was unable to duplicate the failure. The contact stated that the dealer awaited additional diagnostic testing results related to the recurring check engine warning light and drivability concerns. The failure mileage was 3,848.

Filed Nov 4, 2026 · Electrical · NC

**2025 Ram 1500 Warlock – Complete Electrical Shutdown During Automatic Start/Stop Restart** My 2025 Ram 1500 Warlock, equipped with the 3.0L Hurricane twin-turbo engine, has approximately 22,000 miles and is experiencing a serious safety-related malfunction involving the automatic start/stop system. When stopped at a traffic light or intersection, the automatic start/stop system shuts the engine off as designed. While my foot remains on the brake, the vehicle's electrical systems continue operating normally. However, when I release the brake to accelerate, the engine does not attempt to restart. Instead, the vehicle experiences a complete electrical shutdown, including the instrument cluster, infotainment system, and interior lighting. The transmission automatically shifts into Park, and the electronic parking brake engages. The vehicle remains shut down until I manually press the engine Start button. It then starts normally. There are no check engine lights, warning messages, or other indications of a problem before or after the failure. This malfunction creates a significant collision hazard because the vehicle becomes unexpectedly immobilized at intersections when traffic begins moving. Following drivers may reasonably expect the vehicle to accelerate when the traffic signal turns green. At approximately 1,000 miles, the vehicle previously displayed a battery-not-charging warning. An authorized Ram dealership replaced the auxiliary battery under warranty, and the warning disappeared. The automatic start/stop system operated normally more recently, but this shutdown malfunction has since developed without any known changes to the vehicle immediately preceding the failures. I am concerned that this condition could result in a rear-end collision or leave the vehicle immobilized in an active traffic lane. I am requesting that the federal safety agency investigate whether this is a safety-related defect affecting 2025 Ram 1500 vehicles equipped with the 3.0L Hurricane engine.

Filed Oct 29, 2026 · Electrical, Transmission · 85,000 miles · OR

The contact owns a 2025 Ram1500. The contact stated that while driving 7 MPH and approaching a stoplight, the vehicle lost motive power and unexpectedly shifted into Auto Park. Several warning lights were illuminated, with the 4WD, message power steering disabled, and the check engine warning light was illuminated. The vehicle was able to restart. The contact stated that the failure had occurred on several occasions. The contact stated that several error codes were found in the vehicle. The vehicle was taken to the dealer, where it was diagnosed that the auxiliary battery had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact was concerned that the failure was associated with a software causing the battery and powertrain failures. The contact was concerned that the dealer had failed to properly diagnose the vehicle even though the dealer was aware of the issues. The vehicle was scheduled to be diagnosed by the dealer. The manufacturer was made aware of the failure by telephone, and a case was opened. The failure mileage was 85,000.

Filed Oct 19, 2026 · Electrical, Engine · IN

What component or system failed or malfunctioned, and is it available for inspection upon request? PCM, Auto Start-Stop System (based on what I was told by the RAM dealership and paperwork) How was your safety or the safety of others put at risk? When coming to a complete stop at an intersection, the vehicle stalled and shut down entirely, and the vehicle automatically shifted to park. Vehicle was able to be restarted only after pressing the brake, pressing the ignition button, and manually shifting into drive. This could have caused a collision if I was in stop-and-go traffic in a busier area, because I did not know how to respond to the vehicle randomly stalling to begin with. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. RAM dealership was able to replicate. Service advisor told me there was a Technical Service Bulletin released on 10/6/26 that addressed vehicle stalling due to the PCM and auto start-stop system. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No. This has only been inspected by Academy Chrysler Dodge Jeep Ram in Tipton, IN Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning lamps, messages or other symptoms of the problem prior to failure. After the third time the vehicle stalled, the check engine light illuminated. This vehicle was then towed to the dealership for inspection.

Filed Sep 21, 2026 · Engine, Fuel system · MO

2025 Ram 1500 experiences complete engine stalling at low RPM while coasting to stops. First and only owner since June 20, 2025. Vehicle properly maintained. INCIDENTS: August 28, 2026 - stalled twice (12:30 PM at stop sign, 3:30 PM at stop light). Both times coasting with no throttle/brake input. Check engine light appeared. September 17, 2026 - Critical safety incident: Vehicle stalled while releasing brake at stop sign merging with Highway 50 eastbound (50 MPH traffic). Complete loss of power steering and brakes during highway merge. REPAIR ATTEMPTS FAILED: Dropped off September 3, returned September 10 after PCM software update. Stalling returned. Returned September 16-17 for ignition control module update. Vehicle stalled in dealership parking lot same day. Two repair attempts in two weeks - both unsuccessful. DIAGNOSTIC CODES: P0300, P0301, P0302, P0303 (cylinder misfires). Codes persist after both repairs, indicating root cause in ignition/fuel delivery system that software updates cannot fix. SAFETY HAZARD: Vehicle shuts off without warning while operating. Loss of steering/brakes during highway merge created imminent collision risk. Vehicle currently unsafe to drive. REQUEST: Investigate systematic manufacturing/design defect in low RPM stalling condition. Multiple failed repairs and diagnostic codes indicate this is not isolated component failure. Vehicle has defect despite 14 months proper maintenance by first owner. Vehicle also has issues with radio and backup system. Parts on order with no delivery date or repair date.

Filed Sep 2, 2026 · Electrical, Steering · VA

My 2025 Ram 1500 equipped with the 3.0L High Output engine has experienced two separate incidents involving loss or severe reduction of electric power steering assist. The first incident occurred on August 23, 2026, while traveling at approximately 40 mph on a public roadway. The steering became extremely heavy, the odometer began flashing, and the check-engine light illuminated. The vehicle was taken to nearest Chrysler Dodge Jeep Ram service department on August 24 and remained there until August 28. During that visit, the dealership determined that the main battery failed testing and replaced it. The auxiliary battery tested good. The dealership also completed RRT 25-143, RRT 25-237, and RRT 25-239, including several module inspections and software reprogramming procedures. The second incident occurred on August 29, 2026, less than approximately 36 hours after the vehicle was returned to me. At a speed of less than 10 mph, the check-engine light illuminated, the odometer began flashing, the engine shut off, and the vehicle again experienced loss/severe reduction of power steering assist. The vehicle was taken to the RAM dealership where it was purchased on August 31, 2026, for the recurring issue and is currently still at the dealership. At this time, I have not been provided a confirmed root cause or an estimated completion date. This is a significant safety concern because the loss of steering assist has now occurred twice within six days, including once at approximately 40 mph. The first repair did not resolve the condition, and the vehicle has spent the majority of that period in dealership service.

Filed Aug 15, 2026 · Electrical · MI

On October 12, 2025, while on the highway, the CEL started blinking and the truck began misfire and shutter. I was able to get to the side of the road where I discovered the truck would idle but would barely move. It was towed to the closest dealership where they attempted to reflash the PCM and ISCM which is associated with Stellantis TSB 08-31025 REV. B. The PCM was flashed but the ISCM needed to be replaced. This was successful for another 9,484 miles where the issue repeated which, I will create another incident for.

Filed Aug 15, 2026 · Electrical · MI

On June 29, 2025, the CEL started blinking and the truck started shuttering. I was able to pull over to the side of the road where I discovered the truck would idle but not move without stalling. I then had the vehicle towed to the nearest dealership. Upon receiving the vehicle, the dealership diagnosed a short in the wiring harness. Once the wiring harness replaced, it was discovered that the wiring harness short took out the ISCM which was then replaced, for a second time.

Filed Aug 5, 2026 · Driver assistance, Lights · OK

The emergency braking system initiated during operating my vehicle (has done it 3 times) for no reason. It locks up my engine and will not let me operate the vehicle. The software went crazy with warnings. Would not allow me to turn off the engine. It acted like it thought I was having a front end collision. I seriously have been afraid to drive. I have this feature turned off, it should never have activated. I have had several electrical issues; example: drivers side running light twice has had to be replaced (first time it was only a few months old); the passenger side had to be replaced. The air pressure warnings are inconsistent, the screen goes black on my Uconnect system; the clock settings change daily. It drops, freezes or reboots constantly. The first week I had my truck the check engine light came on, I took it back to dealer and they found nothing wrong. A few weeks later it happened again; took it back and they said it was a "KNOWN" RAM issue, nothing is really wrong and no fix was available. It comes on frequently, I get it checked each time. It goes off on its own now. I do not trust it. How will I know if it really has an issue???

Filed Jul 24, 2026 · Engine, Fuel system · WI

I purchased a new 2025 Ram 1500. Within the first week of ownership, the vehicle developed repeated engine misfires, check engine lights, and electrical issues, including a dead battery. The vehicle was repaired multiple times under warranty. The engine later suffered an internal failure that required complete engine replacement. After the engine replacement, the vehicle developed a new drivability problem. The truck now consistently shudders and hesitates during light acceleration and while maintaining a steady speed. The RPM has fluctuated unexpectedly, and the vehicle feels as though it is being fuel starved. This occurs without a check engine light. The dealership’s technician reproduced the condition during a test drive and confirmed the shudder. Stellantis technical support instructed the dealership to replace the mass airflow sensor as the first step in diagnosis but advised that they do not know whether this will correct the problem. I am concerned that the hesitation and shuddering could affect the vehicle’s ability to accelerate safely when merging into traffic, crossing intersections, or passing other vehicles. The vehicle has been out of service for an extended period while diagnosis and repairs continue.

Filed Jul 23, 2026 · Electrical, Lights · 5,000 miles · NV

The contact owns a 2025 Ram 1500. The contact stated that while attempting to start the vehicle, the vehicle failed to start as intended. The contact became aware that the check engine warning light was illuminated. The contact stated that the vehicle failed to start while using the key fob. The contact manually restarted the vehicle. The vehicle was taken to the dealer, where the failure was diagnosed with a misfire at cold start. The contact was informed that the part to repair the vehicle was unavailable. The vehicle was not repaired; however, the computer was reset. The vehicle was released to the contact. The contact stated that while driving at an undisclosed speed, the instrument cluster went blank. The blind spot light failed to function as intended. In addition, the driver's side rear view mirror failed to adjust as intended. The contact received notification of the federal safety agency Campaign Number: 26V059000 (Exterior Lighting, Electrical System). The contact was informed that the parts would be unavailable for the next six months. The manufacturer was made aware of the failure. The failure mileage was approximately 5,000.

Filed Jul 7, 2026 · Engine · 5,846 miles · WA

The contact owns a 2025 Ram 1500. The contact stated that the engine experienced misfires during cold starts. The check engine warning light was illuminated. The vehicle was taken to a local dealer on three separate occasions, where diagnostic trouble code: P0300 was retrieved, indicating random or multiple cylinder misfires. The dealer advised that no repair was currently available, and the vehicle was not repaired.The dealer referred the contact to the manufacturer. The manufacturer was contacted but provided no assistance and referred the contact to the warranty company. Additionally, the manufacturer stated that the federal safety agency was responsible for repairing the vehicle and directed the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 5,846.