There are 2 stored owner reports matching the engine leading-label group for the 2025 Ram 2500 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)Check engine light consistently comes on with codes p0263, p0272, p0266 for contribution balance codes for cylinders 1, 2, 4 & 5. Truck runs rough. Dealership says it’s a 5-8 week process to test and get injectors into replace if that’s the issue. Multiple sources have stated it can be a software update issue and some states still waiting after weeks for fix to be made and paying for a rental car out pocket to have reliable transportation for work and taking care of kids.
The contact owns a 2025 Ram 2500. The contact stated that while driving at an undisclosed speed, the vehicle stalled with the Diesel Exhaust Fluid (DEF) message displayed. The vehicle was able to restart. The vehicle was taken to the dealer, where it was diagnosed that the Diesel Exhaust Fluid (DEF) system had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 1,700.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.