2020 Ram 2500: Diesel complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 30 owner complaints for the 2020 Ram 2500 that list the diesel component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11639458 (filed 01/29/2025): “The contact's husband owns a 2020 ram 2500. the contact stated that the check engine warning light was illuminated. the vehicle was taken to the dealer, where it was diagnosed that the diesel particulate filter had failed due to the high-pressure fuel pump (hpfp) failure, which caused metal shavings…”
- NHTSA complaint ODI #11541343 (filed 08/29/2023): “The contact owns a 2020 ram 2500. the contact stated that after refueling, the vehicle experienced reduced power and sputtering before the vehicle stalled. the vehicle was towed to the local dealer and was diagnosed with a faulty fuel injector. the fuel injector was replaced but the failure eventual…”
- NHTSA complaint ODI #11537670 (filed 08/10/2023): “The contact owns a 2020 ram 2500. the contact stated while driving 55 mph and towing a 2,500-pound trailer loaded with a 9,000-pound vehicle in hot weather, the mil warning light illuminated and the message "service def system - see dealer" was displayed intermittently. several unknown dealers were …”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Varies
Depends on the specific failure; get a diagnosis first. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
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