2020 RAM 3500 Common Problems & Defect Telemetry
Authoritative defect intelligence synthesized from 112 verified NHTSA owner complaints, 11 federal safety recalls, and interquartile failure mileage telemetry.
The 2020 RAM 3500 receives a 4.5/10 MazicBay Reliability Index based on 112 verified NHTSA federal complaints and 11 safety recalls. The primary reported failure mode is Fuel Pump Pressure Loss & Fuel Delivery Defect Reports with a median failure point at 22,750 miles (IQR: 10,532 – 33,750 mi). Out-of-warranty repairs benchmark at $650 – $1,250 .
18.7 complaints / 10k sold
Verified US federal records
Crash, fire & stall audit
11 Active / Free Remedies
Top Reported Problem Clusters (7)
Fuel Pump Pressure Loss & Fuel Delivery Defect Reports
- Sudden loss of propulsion power at highway speeds
- Extended engine cranking / failure to restart
- Fuel odor near fuel tank / engine bay
“The contact owns a 2020 Ram 3500. The contact stated that while driving at various speeds, the vehicle made an abnormal ticking sound. The vehicle was taken to the dealer, where it was diagnosed with high-pressure fuel pump failure, but the vehicle was not repaired at the time...”
“The contact owns a 2020 Ram 3500. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded...”
“The contact owns a 2020 Ram 3500. The contact stated that while driving 75 MPH, the vehicle was shaking and then lost motive power. The check engine warning light later illuminated. The vehicle was towed to the dealer, where NHTSA Campaign Numbers: 21V880000 (Fuel System, Dies...”
Engine Stalling, Oil Consumption & Cooling Defect Reports
- Engine sudden stall / hesitation while driving
- Abnormal oil burning / consumption
- Check Engine Light (MIL) flashing
- Engine overheating / coolant loss
“The contact owns a 2020 Ram 3500. The contact stated while driving approximately 50 MPH, the engine overheated. There was no warning light illuminated. The vehicle was towed to the dealer, where it was diagnosed and determined that the cooling fan module had failed, and the en...”
“The contact owns a 2020 Ram 3500. The contact stated that while the vehicle was parked and the engine was turned off, the gear shifter shifted into the drive position when the contact's minor ... child entered the vehicle to retrieve an item using the steering wheel and gear s...”
“Codes: P2002, P242F, P2463, P1451 Failures: DPF, Charge air cooler leak, PM sensors, EGR internally cracked, Catalytic Convertor, Pink tinged oil, strong diesel odor in oil - post failures. Erratic def gauge readings, unstable idling, clunking downshift when exhaust brake dece...”
Service Brakes, ABS Actuator & Master Cylinder Reports
- Spongy or hard brake pedal travel
- ABS / Brake warning light illuminated
- Extended stopping distance / pedal vibration
“Codes: P2002, P242F, P2463, P1451 Failures: DPF, Charge air cooler leak, PM sensors, EGR internally cracked, Catalytic Convertor, Pink tinged oil, strong diesel odor in oil - post failures. Erratic def gauge readings, unstable idling, clunking downshift when exhaust brake dece...”
“As I was driving the vehicle caught fire and I lost brakes. The vehicle had to be put into a retention pond to stop it.”
“Brake caliper mounting bolt fell out 2 times on driver side now 1 time on passenger side front on both after applying new brakes torqued to specified rating both times bottom bolt falls out top gets loose needs some type of locking tab I applied locktite both time while travel...”
Electric Power Steering Assist & Suspension Noise Reports
- Sudden loss of electric power steering assist
- Steering wheel pull or highway wander
- Clunking / knocking noise over bumps
“The contact owns a 2020 Ram 3500. The contact stated that while the vehicle was parked and the engine was turned off, the gear shifter shifted into the drive position when the contact's minor ... child entered the vehicle to retrieve an item using the steering wheel and gear s...”
“Codes: P2002, P242F, P2463, P1451 Failures: DPF, Charge air cooler leak, PM sensors, EGR internally cracked, Catalytic Convertor, Pink tinged oil, strong diesel odor in oil - post failures. Erratic def gauge readings, unstable idling, clunking downshift when exhaust brake dece...”
“I live in northern California near San Francisco, and we were traveling from Cottonwood, AZ back to our home. Back in June of 2023 we were traveling near Kingman, AZ and had the front passenger tire explode, almost losing control of the truck and trailer. We were at 19524 mile...”
Electrical Parasitic Drain, Infotainment & Harness Reports
- Unexplained battery drain after sitting overnight
- Infotainment display / instrument cluster blackouts
- Accessory malfunction / alternator fault warnings
“Reoccurring messages regarding DEF, Exhaust Regeneration, and DPF, causing more and more frequent ReGen for longer and longer. Numerous trips to various Ram dealerships resulting in codes being cleared and then being told it was a software issue. After 2 years of this intermit...”
“Check engine light turned on in my 2020 dodge ram 3500, I took the truck back to the dealership. According to them the Grid Heater Relay needs to be replaced & the truck could have caught on fire if we would have kept driving like that. I have done some research and saw that t...”
“On 12/4/23, at 6:37 am PST, we initiated remote start via the key fob. At 6:40 am pst, a flash and fire erupted from under the hood of the truck. We immediately worked to control the fire using extinguishers and garden hoses until the fire department arrived a few minutes late...”
Transmission Hesitation, Hard Shifting & Slipping Reports
- Hard gear shifts / delayed engagement into Drive/Reverse
- Transmission shudder / jerking under acceleration
- Transmission slipping between gears
“The contact owns a 2020 Ram 3500. The contact stated that while the vehicle was parked and the engine was turned off, the gear shifter shifted into the drive position when the contact's minor ... child entered the vehicle to retrieve an item using the steering wheel and gear s...”
“The contact owns a 2020 Ram 3500. The contact stated that while the vehicle was parked and turned off, the gear shifter shifted into drive independently, causing the vehicle to roll away. The vehicle stopped before crashing. The vehicle was taken to a dealer; however, the vehi...”
“Codes: P2002, P242F, P2463, P1451 Failures: DPF, Charge air cooler leak, PM sensors, EGR internally cracked, Catalytic Convertor, Pink tinged oil, strong diesel odor in oil - post failures. Erratic def gauge readings, unstable idling, clunking downshift when exhaust brake dece...”
Airbag Occupant Detection & Inflator Defect Reports
- SRS Airbag warning lamp illuminated
- Passenger occupant classification sensor failure
- Seat belt retractor lockup
“The contact owns a 2020 Ram 3500. The contact stated that while the vehicle was parked and the engine was turned off, the gear shifter shifted into the drive position when the contact's minor ... child entered the vehicle to retrieve an item using the steering wheel and gear s...”
“On 6/28/2022 I was involved in an off-set not-at-fault head on collision at 45+ MPH. My vehicle then careened off the initial collision causing a side impact with a large light standard. My vehicle continued until it collided head on with a building and came to a stop. The fro...”
Official NHTSA Safety Recalls (11)
ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 3500, 4500, and 5500 cab chassis vehicles equipped with a Cummins 6.7L High Output engine. The engine calibration software may not warn about low oil volume.
VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 vehicles, Ram 3500 Cab Chassis, 4500 Cab Chassis, 5500 Cab Chassis and 3500 Cab Chassis with a gross vehicle weight rating (GVWR) of less than 10,000 lbs. The windshield wiper arms may loosen, possibly causing the wipers to function improperly and reduce the driver's visibility in certain weather conditions.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Summary: Chrysler (FCA US LLC) is recalling certain 2020 Jeep Gladiator and Jeep Cherokee, 2019-2020 Ram 1500 Pickup, Ram 2500 Pickup, Ram 3500 Pickup, Chrysler Pacifica, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, and Jeep Renegade and 2019 Dodge Challenger vehicles equipped with 8.4" or 12" radio displays. A software error can cause the rearview camera image to remain displayed after the vehicle has been shifted out of reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."
POWER TRAIN:AUTOMATIC TRANSMISSION
Summary: Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 2500 and 3500 Pickup vehicles equipped with six-speed automatic (68RFE) transmissions. A build up of pressure and heat inside the transmission may result in a transmission fluid leak from the dipstick tube.
FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500, 3500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. The High Pressure Fuel Pump (HPFP) may fail, resulting in a sudden engine stall without warning.
STRUCTURE
Summary: Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 Pick-up trucks equipped with an accessory bed step. In certain side loading conditions, the bed step may unexpectedly fail while in use.
WHEELS:LUGS/NUTS/BOLTS/STUDS
Summary: Chrysler (FCA US, LLC) is recalling certain 2012-2021 RAM 3500, 3500 Cab Chassis, 4500 Cab Chassis, and 5500 Cab Chassis vehicles. Incorrect information in the Service and Owner's Manuals may cause the flanged lug nuts to be over-tightened, which could result in a broken wheel stud and possible wheel separation.
ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
Summary: Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 3500, 4500 and 5500 cab chassis built with a Cummins 6.7L High Output engine. Inadequate warmup protection can cause a lack of oil film on the engine connecting rod bearings while the engine is reaching operating temperature. This can result in engine damage and connecting rod failure, which could potentially puncture the engine block.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 2500 and 2021-2022 Dodge Durango vehicles, and 2019-2022 3500 cab chassis with GVWR less than 10,000 lbs. The ABS control module software may prevent the electronic stability control (ESC) malfunction indicator light from illuminating during certain conditions. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
POWER TRAIN:AUTOMATIC TRANSMISSION
Summary: FCA US, LLC (Chrysler) is recalling certain 2020-2023 Ram 2500 and 2020-2022 Ram 3500 vehicles. A build-up of pressure and heat inside the transmission may result in a transmission fluid leak from the dipstick tube.
STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS
Summary: Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailgate opening while driving.
Pre-Purchase Inspection Checklist for 2020 RAM 3500
Before purchasing a used 2020 RAM 3500, perform the following targeted inspections based on reported federal defect patterns:
Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).
Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.
Verify that all 11 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.
Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.
Defect & Reliability Q&A: 2020 RAM 3500
Is the 2020 RAM 3500 a reliable used car?
The 2020 RAM 3500 earns a 4.5/10 MazicBay Reliability Index based on 112 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.
What is the most frequent defect reported on the 2020 RAM 3500?
The leading complaint category is Fuel Pump Pressure Loss & Fuel Delivery Defect Reports, with a median failure point around 22,750 miles (IQR: 10,532 – 33,750 mi).
Are there free recall repairs available for the 2020 RAM 3500?
Yes, the NHTSA records 11 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.