Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2022 Ram 3500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2022 Ram 3500. The contact stated while driving 40-45 MPH and hauling a 14-ft loaded trailer, the engine made an abnormally loud knocking sound. The check engine warning light was illuminated. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to the residence, where a mobile independent mechanic diagnosed that the grid heater nut had melted and entered cylinder #6. The vehicle was then towed to the dealer, where it was diagnosed that the grid heater nut failure had caused catastrophic failure of the pistons, turbo charger, and engine. The dealer determined that the engine assembly needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the repair could not be covered under warranty due to the mileage on the vehicle. …
The contact owns a 2022 Ram 3500. The contact stated that while driving at various speeds, the vehicle hesitated to accelerate while the accelerator pedal was depressed. The check engine warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed; however, the cause of the failure was not determined. In addition, the contact stated that the vehicle was taken to the same dealer approximately eight times, and a loaner vehicle was provided; however, after several unknown repairs, the failure reoccurred. The vehicle was previously repaired under warranty. The manufacturer was made aware of the failure. The failure mileage was approximately 2,000.
The contact owns a 2022 Ram 3500. The contact stated that while driving at an undisclosed speed, the engine made abnormal knocking and ticking sounds. The knocking and ticking sounds became louder while accelerating. There was no warning light illuminated. The vehicle was taken to an independent mechanic, who determined that the piston had ingested the grid heater nut. The mechanic replaced the piston, cylinder head assembly, gaskets, rod, gasket intake, Hamilton flat tappet conversion kit, and XDP grid heater. The manufacturer was made aware of the failure. The failure mileage was 88,745.
The contact owns a 2022 Ram 3500. The contact stated that while driving approximately 10-15 MPH, there was an abnormal rattling sound coming from the vehicle. The engine warning light was illuminated. The local dealer was contacted, and it was determined that the grid heater bolt had melted and fallen into the engine. The vehicle was repaired after two months due to the piston being on backorder. The manufacturer was contacted, but no additional assistance was provided. The approximate failure mileage was 35,000. The VIN was not available.
On 9 September, while driving, I got an emergency dashboard notice that stated Throttle System Malfunction contact dealer. It went out and then another immediately flashed that stated Exhaust System Malfunction contact dealer. The vehicle lost power within seconds after the second notice. I coasted to a stop on the side of the road. Once stopped, smoke quickly started coming out of the engine compartment and then flames. I contacted 911, an engine arrived but the truck was fully engaged and completely burnt.
The contact owns a 2022 Ram 3500. The contact stated while at a stop light, the vehicle would not accelerate, with the check engine warning light illuminated. The vehicle was towed to the dealer and the contact was informed that the hub one assembly kit and snap ring needed to be replaced. The vehicle was not repaired. The manufacturer was contact but provided no assistance. The failure mileage was 200,119.
The vehicle had been parked in the street for several hours. I started the vehicle in order to back it into my driveway for the night and then turned it off (total run time for the operation was most likely under a minute from the time the engine was started until it was shut down). The temperature was relatively cool and I did have to wait for the grid heater to cycle before the engine started. I did not notice any signs, warnings, safety indicators, or dash lights to alert me to any possible problems. Upon exiting the truck I detected a very faint and quickly disipating odor of hot electrical components, similar to a fourescent light ballast that has gone bad. I looked around but didn't see anything. I began retrieving some tools from the rear passenger side of the truck and smelled the same odor but stronger. …
I own this truck and have had issues with the exhaust regeneration process for about 6 months. I have taken it to the dealer 3 times and they have done diagnostics and replaced the diesel particulate filter, but the issue continues to happen. They have now told me that the system is not reparable and they don't have support from RAM manufacturer to troubleshoot and repair this issue. They have multiple customers with the same issue with the diesel exhaust system not operating properly, hampering the engine performance, damaging the engine and exhaust system, polluting from the exhaust discharge. This is a widely known issue with the 2022 Ram 3500 from other owners, yet RAM refuses to properly address the issue. They advertise their trucks with certain horsepower and output specs, which aren't accurate due to their faulty exhaust systems. …
Transmission failure while towing a travel trailer on a busy street on a slight incline. While traveling about 45 mph felt a jolt and truck lost power and would not accelerate. Felt like truck was in neutral. Truck would not engage Drive and was completely disabled in the number one lane. Tried to re engage the transmission and had success at engaging a higher gear with slow speed and high RPMs causing the engine and transmission to overheat and possibly start a fire. Safely moved across lanes to shoulder and stopped. The street is 55mph. Cars were slamming on their brakes to avoid colliding into my truck or trailer. This happened on March 30, 2023 and has been at the dealership for repairs since and has not been even inspected yet yet. No indicator or warning lamps prior to failure.
My pm sensors or particulate matter system malfunction and failed which lead to emissions issues and created my vehicle to drive in limp mode. Limp mode basically slowed downs the vehicle is slow as 5 mph as soon as this light displays at any time while driving on the highway. This put my safety in danger and the public as I transport what dot considers a type hazardous material. The sudden loss of power in the middle of the road has made vehicles around me extremely vulnerable to fatal collisions. I took my vehicle to the dealership where they confirmed this malfunction and problem with my vehicle but no recall has been issued as of yet no warning lamps appeared prior to the failure.
Related recalls
Engine and engine cooling › Engine › Engine control module (ECU/ECM)
Chrysler (FCA US, LLC) is recalling certain 2022 Ram 3500, 3500 Cab Chassis, Ram 2500, and 4500 and 5500 Cab Chassis vehicles equipped with Cummins 6.7L turbo diesel engines. The engine control module (ECM) may have been built with a misaligned capacitor that can short-circuit, resulting in an internal loss of communication.
Remedy: Dealers will replace the ECM, free of charge. Owner notification letters were mailed October 20, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is Z87.
Engine complaints in other 3500 years
Frequently asked questions
How common are engine problems on the 2022 Ram 3500?
NHTSA has 25 complaints about the engine & cooling of the 2022 Ram 3500, 13% of the model year's 190 complaints.
Is there a recall for 2022 Ram 3500 engine problems?
Yes — NHTSA recall 22V-642 (engine control module (ecu/ecm), Aug 26, 2022). Recall repairs are free at authorized dealers.
At what mileage do 2022 Ram 3500 engine problems start?
Half of the complaints with a recorded mileage happened before about 89,000 miles, and 20% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 2 fires and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.