Ram 1500 check engine light comes on

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, Fuel system · MD

A check engine light issue fuel filler neck replace, eism leak detection pump and fuel line bundle

Filed Oct 29, 2026 · Transmission · SC

Transmission issues are a known problem in the 2021 Ram 1500 and have been for a while, with no recalls. Slipping of gear. Delay or jerking into reverse. Putting it in reverse and it telling me to put it into park or it auto-correcting itself into park. While driving twice and going from complete stop after the auto correcting went to pull off & the vehicle did not go into gear the RPM was raised and the truck moved forward but would not go into gear. The smell of transmission fluid and possible coolant seem to be in truck through vent. The Malfunction Indicator light came on. Had a Shop check code said it showed Valve Body. All these are known issues with the transmission and should be recalled as this is very dangerous for driving as it could stop in road, loose power going up hill on interstate and if there are leaks it could cause a fire. There should have been recalls and investigations. Manufacture knows these issues are and have been happening but does not want to spend the money to fix problems. Ignores and hopes warranty will be gone before it happens so it will be on the owner. That is what they did with me.

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 26, 2026 · Engine · 70,000 miles · GA

The contact owns a 2015 Ram 1500. The contact stated that while driving, the vehicle stalled and was towed to the local dealer to be diagnosed, and the contact was informed that the engine had failed due to an EGR cooler malfunction. The engine was replaced but the vehicle later experienced failures with the check engine warning light remaining illuminated and there was exhaust smoke odor inside the vehicle while driving. The vehicle was taken to the local dealer who informed the contact that the EGR cooler had failed, and coolant was leaking into the manifold. The vehicle was not yet repaired. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 19V757000 (ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 70,000.

Filed Oct 22, 2026 · Engine · GA

Blown Engine- No prior indicators that were obviously present. Driving on highway and about 40 miles in, loud ticking noises. Truck previously had manifold bolt breaking issues so assumed it was an exhaust leak. Within another 20 miles, the engine light came on and engine noises noticeably increased. Immediately took it to Ram Service and was diagnosed with a failed camshaft and camshaft bearing wear/scoring. Issue was reported to Ram dealership and ultimately fixed at owner cost.

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 Oct 15, 2026 · Engine · 14,700 miles · IA

The contact owns a 2016 Ram 1500. The contact stated that upon starting the vehicle and attempting to drive, the vehicle failed to accelerate, and multiple warning lights, including the check engine warning light, illuminated. The contact stated that the vehicle felt sluggish while driving and failed to accelerate beyond 60 MPH. The contact also stated that a burning smell was noticed coming from the rear filter of the vehicle. The vehicle was taken to an independent mechanic, where it was diagnosed that the diesel particulate filter (DPF) and emissions system failed and required replacement. A dealer was notified of the failure. The contact stated that the failure was previously associated with a recall. The failure mileage was approximately 147,000.

Filed Oct 8, 2026 · Electrical, Fuel system · OH

I was traveling northbound on [XXX], just before [XXX], at approximately 35 mph on dry asphalt in my 2015 Ram 1500 3.0L EcoDiesel just after refilling the fuel tank with 13.999 gal. of diesel fuel. While the vehicle was being driven both fuel-tank retention straps broke. The fuel tank dropped from its retained position and was observed resting on the asphalt beneath the vehicle. The vehicle lost all power causing a near-miss incident while attempting to navigate out of traffic. After coming to a stop, the vehicle was moved to the side of the road and parked just east of [XXX] on [XXX]. Passenger and eyewitness [XXX] experienced the entire incident and also observed the fuel tank beneath the vehicle and the broken straps. The vehicle could crank but would not start; and the fuel lines and electrical supply were both damaged. The check-engine light illuminated, as well as the fuel low and fuel sensor fail messages occurred during and after the incident. AAA towed the vehicle directly to Byers Chrysler Jeep Dodge Ram on XXX. Dealer repair order XXX was opened XXX, and the vehicle was physically inspected on XXX. The dealer documented: “VERIFIED CUSTOMER CONCERN. CHECKED AND FOUND REAR FUEL TANK STRAP MOUNT IS RUSTED OUT. NOTHING TO HOLD TANK IN VEHICLE.” The dealer further documented that the vehicle “NEEDS FRAME OR REPAIRED FOR REAR FUEL TANK STRAP.” No recall repairs could be made; therefore the disabled vehicle was returned. The concern is that failure of the fuel-tank retention system caused the fuel tank to drop onto the roadway while the vehicle was moving. The dealer subsequently found that the rear fuel-tank strap mounting area was rusted out and that there was “NOTHING TO HOLD TANK IN VEHICLE.” I request that the federal safety agency investigate whether corrosion at the fuel-tank strap/frame attachment area can progress to the point that the fuel tank can no longer be safely retained. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 8, 2026 · CA

"My 2019 Ram 1500 was delivered to the factory-authorized dealership in [XXX], for engine lights on warning failures under factory warranty. The dealership held the vehicle out of service for approximately 60 consecutive days from XXX. The exact minute the vehicle was driven off the lot following this 2-month repair window, the identical dashboard safety warning lights immediately illuminated again. The Check Engine light continuously cycles on and off, preventing California smog compliance. Additionally, when hot, a severe, loud roaring noise emanates from the front engine bay as the cooling fan forces itself into emergency high-blast override. The defect is severe, persistent, and entirely unresolved, rendering the vehicle's safety systems inoperable immediately upon release." AC has not work for years, vehicle has been in and out many times, it's still under warranty and I'm afraid it will expired and I'm stuck paying out of pocket trying to fix it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)