2021 Ram 1500: engine stalls while driving

Filed Oct 5, 2026 · Fuel system · CA

My 2021 Ram 1500 EcoDiesel previously had the federal high-pressure fuel pump safety recall completed (Recall Z96 / the federal safety agency Campaign 22V767000) on February 12, 2024, where remedy part CSSMZ461-AA was installed. Recently, the vehicle suffered a complete loss of motive power due to a sudden, catastrophic internal failure of this replacement fuel pump. The dealership service department has officially diagnosed the truck and confirmed that the replacement fuel pump blew up internally, sending metal shards throughout the entire fuel system and requiring a complete $9,080 replacement of the fuel loop. This is a complete failure of a federal safety recall remedy, duplicating the exact highway stalling hazard the recall was issued to fix. Stellantis/FCA must investigate why these replacement remedy pumps are continuing to fail and creating dangerous conditions for drivers.

Filed Aug 24, 2026 · Engine, Transmission · PA

The contact owns a 2021 Ram 1500. The contact stated that while driving at an undisclosed speed, the "Service Electronic Steering Control", "Service Transmission", and the "Continue to Drive - Do not Shift or Turn off Engine" messages were displayed on the instrument panel, before the vehicle stalled. Additionally, the message "Shift to Park and Back to Drive", "Rear Braking Assist Unavailable", and "Self-Park Assist Disabled" messages were displayed on the instrument panel. The failure had occurred on several occasions. The contact stated that the vehicle was previously serviced under an unknown recall associated to the failure. The vehicle was taken to the dealer to be diagnosed; however, the cause of the failure was unknown. The dealer stated that the failure might be electrical. The vehicle was not repaired. The vehicle was towed back to the dealer; however, the vehicle was not yet diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Jul 6, 2026 · Transmission · TX

I am experiencing a severe, life-threatening stalling issue with my 2021 Ram 1500 equipped with the 5.7L HEMI eTorque system. While driving at low speeds through a neighborhood (between 5 and 15 mph), the engine suddenly and cleanly shuts down without any prior warning, sputtering, or illumination of dashboard error lights.As soon as the engine stalls while the vehicle is in motion, the truck's transmission safety system triggers 'AutoPark' and instantly activates the electronic parking brake. This causes the truck to violently slam to a complete stop in the middle of the roadway, locking the rear wheels. After coming to a complete stop, the vehicle can be immediately restarted and will drive normally without storing any diagnostic trouble codes (DTCs).This exact failure mode matches the dangerous behavior outlined in the federal safety agency Recall 23V‑265 (FCA Recall 37A). However, the manufacturer's database lists this recall as 'completed' on my specific VIN. The software update either failed to permanently resolve the issue, or a hardware defect within the eTorque electrical/grounding system is mimicking the safety defect. The sudden, uncommanded braking in active traffic poses an extreme risk of a rear-end collision or crash. This has happened a few times while the vehicle was under warranty

Filed Mar 15, 2026 · Transmission · NJ

RAM's 2023 recall addressed the engine shutdown problem in 131,700 of its half-ton 1500 RAM trucks equipped with the 5.7-liter Hemi eTorque mild hybrid engine. RAM said 1,500 5.7-liter eTorque models built between June 3, 2020, and September 12, 2021, had faulty software and needed a powertrain control module calibration update to fix the problem. Consumer complaints also exist that the RAM eTorque system has caused vehicles to shut down while in motion, which is by far the most dangerous problem attributed to it. My truck was built 08/2021

Filed Mar 14, 2026 · Engine, Fuel system · OH

Wa driving with cruise on at 60 mph. Truck stalled with no notice, no warning lights or check engine light. All temperatures and pressures seemed okay at time of incident. Could not move electronic shifter into neutral, was stuck in drive. Alarm came up to shift to park, I did not shift due to moving at 55mph at this time. Coasted to a stop on side of the road. At about 2-3 mph, truck automatically shifted to park. I attempted to restart truck but engine just cranked over with no fire. Attempted 3 times and still nothing. Waited 20-30 min and attempted again and same result. Call for tow truck and had towed to dealership. While waiting for tow truck, had full power in truck, no warning lights. Checked fuses for fuel and found no issues. Did hear fuel pump engage when turned ignition to run. Checked oil level, oil was changed 800 miles prior to incident, oil was at full level on dip stick.

Filed Feb 15, 2026 · Engine · IA

The Check Engine Light came on and the truck would misfire and stall. We took it to 2 separate mechanics - Mechanic 1 (Certified Sideros Automotive): It was found that the multiple cam shaft lobes were flattened and ground due to a failed lifter, recommendation - replace engine. Mechanic 2 (Stew Hansens Ram): Check Engine Light came on, multiple cylinder miss fire. Using a bore scope inspected cylinder walls, found a very small crak allowing coolant to slowly bleed into the system, recommendation - replace engine We replaced the engine with a rebuilt engine at a cost of $7,677.58. This should not happen to a truck that is only 4 years old. Its a 2021 and the engine was replaced 5/2025. We were not aware of any recalls but we did have the dealership clear all recalls on the new engine such as the engine software update after it was installed.

Filed Jan 27, 2026 · Engine, Fuel system · 102,000 miles · FL

The contact owns a 2021 Ram 1500. The contact stated that while driving 55-60 MPH, the vehicle stalled. There were no warning lights illuminated. The vehicle was taken to the local dealer, who replaced the high-pressure fuel pump under the federal safety agency Campaign Number: 22V767000 (Fuel System, Gasoline, Engine); with the additional repairs on the low-pressure fuel pump at the Owner's expense. The vehicle was partially repaired. The manufacturer was contacted and opened an investigation. The failure mileage was approximately 102,000.

Filed Sep 30, 2025 · Body, Electrical · MO

While driving the vehice on 9/23/25, it randomly turned off while driving down my street. Took a while to get it started again, then once it was started, it would not turn off. I brought the vehicle to a local shop. There were NO warning lights.The next day they let me know that the issue was from a faulty sliding backlite, there were cracks on the frame by the back windows that caused water to leak down around the window into a control module that was filled with water that caused the vehicle to randomly turn off while driving down the street then later caused it to not be able to turn off. If this issue caused the vehicle to turn off while on a highway or a curvy road it would have almost definitely ended with a severe accident. I got in touch with stellantis and they know about the issue but aren't willing to help in any way.

Filed Aug 6, 2025 · MO

The NoLimitz module cause my vehicle to shut off while in motion 1 time, and lose critical controls to safely operate the vehicle while in motion twice (power steering, gauge cluster, power brakes). Even though the engine still ran, once shut off it would not start again or go into neutral. I conclude the issue was the device as the power light on it was off (it should remain on when the ignition is in run or ACC as stated on the instructions from the manufactory). Once I un-plugged and re-plugged the module back in, everything returned to normal other than DTCs.

Filed Jul 6, 2025 · Electrical · PA

Component: Motor Generator Unit (MGU) — part of the eTorque system on 2021 Ram 1500. What happened: I own a 2021 Ram 1500 with eTorque. In the year I’ve owned the truck, it has broken down twice due to major electrical issues. Most recently, it has been in the dealership’s shop for over 3 weeks due to a faulty MGU (Motor Generator Unit). There is no estimated time for repair because the part is backordered nationwide. Safety risk: The MGU failure caused the vehicle to become completely inoperable, leaving me without reliable transportation. I am concerned this issue could lead to a loss of power or stalling while driving if it had occurred under different conditions. Reproduction/inspection: The issue has been confirmed by the dealership (Preston Chrysler Dodge Jeep Ram in New Castle, PA). They are unable to proceed with the repair due to lack of part availability. The truck is currently sitting on the lot. Warning lamps/symptoms: Prior to failure, warning lights appeared and the truck experienced erratic behavior. The vehicle would not start after being turned off for a short period of time, and the RF hub had previously failed as well.

Filed Jun 26, 2025 · Acceleration, Electrical · TX

When driving home in the rain going 65+/- MPH my truck just shut off and turned back on, but was not able to accelerate. Had to pull off on the side of the road and the car started back up. This happened at least 5 more times on my 30 minute ride back home. When I finally got it home the truck would not cut off. I had to disconnect the batter which still did NOT stall the truck. Luckily I found a forum that advised to pull a specific fuse to cut the truck off. My biggest concern was that no warning lights or error codes came up on the dash it just went blank and came back on. The vehicle is currently at Roger Williams Ram Dealership in Weatherford TX. They have had the truck over a week and are still trying to figure out what the problem is. They have replaced a fuse box to my knowledge but this didnt fix the issue. I have video of the incident (driving with no power).

Filed Jun 24, 2025 · Electrical, Engine · CA

Engine light came on. Was driving ~25MPH on city street, in x-section of 2 major streets and heard loud mechanical noise, warning indicators audible and visual, and vehicle bucked and stalled within 100ft of when it started. After restarting vehicle was able to move about 20 more feet before losing power again. Brough to dealer, diagnosed with MGU (Motor Generator Unit) failure and battery that was defective due to incorrect charging. MGU part is nationally back ordered, with approximately 4000 replacement units on order with manufacturer, and 5 years of history of problems reported on owner chat boards and websites, both with brand new vehicles and vehicles that are just a few years old.