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2018 Ram 2500 Engine Problems

23 owner-reported engine complaints from NHTSA data

23
Complaints
2
Crashes
3
Fires
Jan 2025Dec 2022
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (23)

criticalENGINE
Filed: Nov 2025

Turbo actuator is a defective item. Per the Facebook forums I'm in, this item is often talked about as a common point of failure. There are also several videos on YouTube describing the defect.

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NHTSA #: 11697093
criticalENGINE AND ENGINE COOLING
FireFiled: Sep 2025

The contact owned a 2018 Ram 2500. The contact stated that while her husband was driving and pulling a fifth wheel RV, the check engine warning light and another unknown red warning light were illuminated. The contact's husband stopped in the middle of the road and immediately exited the vehicle with the contact's nephews and dog, who were also occupying the vehicle.

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NHTSA #: 11686408
criticalENGINE
FireFiled: May 2024

The contact owned a 2018 Ram 2500. The contact stated the vehicle was parked overnight on the street and unoccupied when a loud bang was heard and it was discovered that the vehicle had caught on fire. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The fire department and police department arrived to inspect the vehicle where it was noticed the fire started on the passenger side of the engine however the exact origin could not be determined. The contact mentioned that the vehicle was consumed by the flames and there were only burnt framing remains of the vehicle. A police report was filed but the case number was not available. No injuries were sustained. The vehicle remained in the contact's possession. The manufacturer was not made aware of the failure. The failure mileage was approximately 65,000.

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NHTSA #: 11590977
criticalENGINE
Filed: Apr 2024

On 20 Mar 2024, the vehicle throttle went to full throttle and was stuck in full throttle while on the highway. After kicking the accelerator pedal multiple times the throttle came out of full and then entered limp mode with the message “service electronic throttle control” displayed.

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NHTSA #: 11581337
criticalENGINE
Crash / FireFiled: Nov 2022

Diesel truck computer system shuts down truck for minor def system error code to 5mph within 85 miles to get to a dealer to reset computer code. This will cause deaths from truck not going any faster than 5mph on freeway.

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NHTSA #: 11494452
criticalENGINE
CrashFiled: Nov 2022

Def warning light comes on for no reason and derates your speed to 5mph while traveling on interstate pulling trailer. You have only 85 miles to get to a dealer to erase codes. This is a very unsafe computer programing setting that the EPA states must be done.

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NHTSA #: 11493811
criticalENGINE
Filed: Nov 2022

The engine oil pressure light suddenly comes on and the pressure drops causing the engine to turn off. Vehicle turns off in the middle of road while driving can cause serious accidents and injuries.

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NHTSA #: 11492976
highENGINE AND ENGINE COOLING
Filed: Oct 2024

The contact owns a 2018 Ram 2500. The contact stated while driving at approximately 35 MPH, the diagnostic trouble codes P24B0, P24B5, and P25C9 were displayed on the instrument cluster. The contact stated that he was able to continue driving.

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NHTSA #: 11622458
highENGINE AND ENGINE COOLING
Filed: Sep 2024

The contact owns a 2018 Ram 2500. The contact stated that while driving 70 MPH uphill and hauling a loaded trailer, the contact noticed that the radiator fan had engaged, and the vehicle made an abnormally loud shredding sound and the engine started overheating. Additionally, there was smoke coming out of the exhaust pipe and there was an abnormal coolant odor.

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NHTSA #: 11613950
mediumENGINE
Filed: Feb 2025

Truck only has 66,000 miles and developed a bad oil leak from the timing cover/crank front of engine. Repair is going to cost around $4000 and dealer says there have been several cases of the same thing.

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NHTSA #: 11642699
mediumENGINE
Filed: Jan 2025

The Turbo Actuator on the Ram 2500's especially Gen 4 are known to have faulty Turbo Actuators on them. There is a huge supply issue with trying to get one for repair , I called every auto parts store and no one could get one due to manufacture constraints. Basically they told me to call the dealer .

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NHTSA #: 11636791
mediumENGINE
Filed: Sep 2024

Nothing has happened so far, however it has come to my attention that the grid heater bolt will eventually deteriorate until dropping into the intake and then into the number six cylinder. This could be a serious safety issue for me when pulling our 2970 RL Imagine Travel Trailer that could possibly weigh upwards toward 10,000 pounds fully loaded.

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NHTSA #: 11615693
mediumENGINE,FUEL/PROPULSION SYSTEM
Filed: Feb 2024

when hauling my 20' enclosed trailer with a 10k lbs load my 2018 ram 2500 turbo actuator went out. my exhaust brake is inoperable due to the turbo actuator not functioning properly. the truck does not build boost as it should.

NHTSA #: 11574515
mediumENGINE
Filed: Feb 2024

The contact owns a 2018 Ram 2500. The contact stated that while towing a trailer at 55 MPH, the turbo actuator failed to operate with the check engine warning light illuminated. Upon investigation, the contact discovered Technical Service Bulletin: 09-005-22 which linked the failure to the turbo actuator kit.

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NHTSA #: 11574528
mediumENGINE
Filed: Feb 2024

The truck developed and engine tick. They got progressively worse, and it felt like the engine was misfiring and made the speed of the truck inconsistent when I tried to accelerate in decelerate. The mechanic told me the engine ticks were definitely coming from the lifters and we had it repaired.

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NHTSA #: 11571941
mediumENGINE
Filed: Dec 2022

The brake anti lock warning light comes on intermittently causing cruise control to be turned off.Yes it can be inspected.I feel this is a safety issue when driving at highway speeds.

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NHTSA #: 11496780
mediumENGINE
Filed: Jun 2022

The check engine light came on and vehicle gave a 196 miles to reduced power and shutdown warning. Vehicle was taken to dealer and diagnosis was that the Diesel Exhaust Fluid gauge and pump assembly had failed. Repairs were made at dealer.

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NHTSA #: 11468683
mediumENGINE
Filed: Jul 2021

The DEF Pump responsible for controlling the flow of Diesel Exhaust Fluid to reduce exhaust emissions prematurely fails (in my case, it was at 61,000 miles) which forces the truck into "limp mode" limiting the speed of the vehicle to 5 miles per hour.

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NHTSA #: 11427176
mediumENGINE AND ENGINE COOLING,POWER TRAIN,EQUIPMENT
Filed: Aug 2020

Tl* the contact owns a 2018 ram 2500. The contact received notification of NHTSA campaign number: 19v818000 (equipment, engine and engine cooling) and 20v036000 (power train) however, the parts needed for the recall repairs were not yet available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair.

NHTSA #: 11350663
lowENGINE
Filed: Dec 2024

Remote start will engage when initiated then turn off after 10 seconds. Gear shift leveler not all the way in park when at park.

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NHTSA #: 11629260
lowENGINE
Filed: Feb 2023

Multiple reports from 6.7 Ram Cummins owners experiencing the failure of the grid heater. The grid heater failure leads to the destruction of the engine. Ram uses a grid heater to warm up the vehicle during cold temperatures for starting.

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NHTSA #: 11506478
lowENGINE
Filed: Jul 2021

truck engine failure at 120,920 miles. 6.4 hemi in a 2500 ram truck. this is the 3rd truck that has engine failure at approx 120,000 miles and reports of bearing metal in the block.

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NHTSA #: 11424963
lowENGINE
Filed: Sep 2020

Bad starter over the miles

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NHTSA #: 11360654

Other 2018 Ram 2500 Issues