Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Ram 2500 owners, lightly cleaned up (personal details are redacted by NHTSA).
While my truck was parked and running (auto-started: FACTORY auto start), truck spontaneously burst into flames and burnt down before fire dept could get to it and put it out. TOTAL LOSS. Of note: fire dept was about 100yds away and responded as soon as we saw flames.
This vehicle has a manufacturers #X99 extended warranty. It is for the Turbo Actuator. It extends to 15 years or 150,000 miles. I had a failure of my Turbo Actuator. The vehicle went into limp mode approx 2,000 miles from my home.The malfunction indicator lamp went on and I had to get the control solenoid fixed in order to continue to use the vehicle. We were told that this was related to the Turbo Actuator and to get it fixed when we got back home. I had to have more work done on it once home to finish the Turbo work done.I have approached Ram through mail and email to get reimbursed for the costs. I am continuously getting denied from the manufacturer. When I get emails from Stellantis the people only have one name and no direct contact number so I can speak with them. I have continuously asked to speak to a supervisor and no on will get back to me. …
This issue relates to code U010c "lost communication with turbo charger supercharger A". When the engine brake is turned on the engine brake can remain on during this malfunction and the vehicle loses power. If the fault code above occurs at highway speed and the engine brake was activated the engine brake can remain on even if the accelerator is pressed and the engine brake is manually turned off. This situation required me to quickly move to the shoulder and shut the engine off to reset the fault code. This has happened to me several times. My vehicle only has 34k miles but the warranty has expired. The turbo actuator tests ok until the engine is at operating temperature. The actuator electronic control malfunctions at normal engine operating temperature. The dealer wants to replace the entire turbo. …
Turbo Actuator for Ram 2500 has been recalled in 2022, but for some reason, my Ram 2500 from 2015 was left out of the recall. The MIL indication and subsequent codes related to this failure are the same as being reported in the Warranty Bulletin previously addressed by FCA, X99 6.7 Cummins Turbocharger Actuator Warranty Extension. I was put at risk of an accident due to this happening on expressway. I experienced a loss of power when I certainly needed it to pull over to get to the shoulder. I believe my vehicle and others that were built with these subpar actuators should have been included in this warranty extension. Please advise if further information is needed. The ideal resolution is to be included in the warranty extension of the actuator and have the appropriate part replacement for this issue. Thank you for your time into this matter, Regards, [redacted]
The high pressure fuel pump is disintegrating. It has been recalled in newer dodge rams But has not been recalled 4 2015 even though it is very similar and made of the same material. This has been confirmed with the dodge dealership as this is where it sits, so it is available upon request. We had a check engine light come on prior to the incident but was never Indicated when checked at the shop that this was the problem. As far as safety goes you never know when it is going to act up. It usually doesn't have power from the get go or loses power while driving, Putting people's safety at risk as it will slow down to almost stopping or not go at all. It also continually blows black smoke. It has been inspected by the dealership. It has been inspected by an insurance adjuster all confirmed the hype. …
Mopar has discontinued parts for many Ram vehicles with a 6.4L Hemi motor including the exhaust manifolds. My exhaust manifold is currently cracked and has an audible leak. Exhaust enters the cab of the vehicle when starting, idling, or reversing. They have no indication of providing a fix for this and the parts are not available aftermarket either. This broken piece not only affects the performance and safety but renders my truck unusable per DOT guidelines and would be red flagged during a roadside DOT check. In my area I know of three other trucks with the same issue. I have tried to reach out to the manufacturer with no response and all the dealers I have tried to reach do not have a solution. This problem can affect trucks as new as 2019 and old as 2011.
On 3/29/23 while driving approximately 80 miles back home, the vehicle began leaking engine oil and coolant upon acceleration. The vehicle was returned to the shop for repair but the repair failed. On 4/8/23, again the vehicle began to spew oil and coolant upon acceleration. No warning lights came on. The reservoir for coolant is drained of coolant. There is an odor of oil and antifreeze in the cabin which is harmful and poisonous. Also, the engine may fail along with other components on the vehicle without warning as no there is no indicator light warning of the problem.the vehicle was purchased on 3/29_23 from a used car dealership, whom allegedly claims to have inspected the vehicle thoroughly
On two separate occasions, once in 2025 and again in July 2026, while pulling a travel trailer an emissions control fault in the EGR system caused the Cummins turbo diesel engine in the truck to lose power. At this reduced power, highway speeds could not be maintained, and even small hills were difficult to climb. This is a significant safety problem, and the dealerships could not provide a timely repair due to lack of parts availability. The manufacturer of software in the engine control system does not allow the use of aftermarket parts. This is monopolistic and anti-competitive. An emissions control fault Code should not deprive me of the use of my vehicle.
The water pump on my 2015 Dodge Ram 2500 failed while I was driving it causing the serpentine belt to slip off the pulleys and I lost all power steering and for some reason power brakes. This all happened in the middle of negotiating a right hand turn causing me to leave the roadway and travel up an embankment and roll onto the passengers side. The road it happened on was a back country road and my vehicle was the only one involved, thankfully.
Our 2015 Ram power wagon less than 40,000 miles on the odometer went into limp mode(service adviser told us that's what is called) while we were driving on I-65. We took the car to freeman Dodge in nashville, tn and they could not find a problem, apparently truck didn't give a code and they could not replicate the issue. However, when we are picking our truck back from the dealer they told us that transmission dipstick tube is broken, we asked them how is that possible and all they could tell us was we don't know and the cost of fixing it is over $500(we did not get it fixed), the service adviser told us that she has seen this problem in the past as well, I asked her if she has seen any other scratches or dents around the broken tube she told us that there is no any other damage but the dipstick tube. …
Related recalls
Engine and engine cooling › Engine › Diesel
Chrysler (FCA US LLC) is recalling certain 2013-2017 RAM 2500, 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles, equipped with Cummins 6.7L Turbo Diesel engines that have Concentric-brand water pumps without a vent hole. These water pumps may leak coolant.
Remedy: Chrysler will notify owners, and dealers will replace the water pumps, free of charge. The recall began February 26, 2018. Owners may contact Chrysler customer service at 1-800-853-1403.
Engine complaints in other 2500 years
Frequently asked questions
How common are engine problems on the 2015 Ram 2500?
NHTSA has 36 complaints about the engine & cooling of the 2015 Ram 2500, 17% of the model year's 215 complaints. The component named most often is exhaust system › emission control (1 mentions).
Is there a recall for 2015 Ram 2500 engine problems?
Yes — NHTSA recall 17V-562 (diesel, Sep 12, 2017). Recall repairs are free at authorized dealers.
At what mileage do 2015 Ram 2500 engine problems start?
Half of the complaints with a recorded mileage happened before about 46,000 miles, and 38% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire 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.