NHTSA campaign 21V439000 · Manufacturer campaign Y21
Ram Recall 21V-439: Engine Calibration may not Warn of Low Oil Volume
NHTSA recall 21V439000 (Manufacturer campaign Y21) was reported by Chrysler (FCA US, LLC) on June 10, 2021, with 32,002 vehicles potentially affected (per NHTSA). NHTSA's record lists the Ram 3500, Ram 4500 and Ram 5500 for model years 2019–2020. Owners were notified on June 25, 2021, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V439000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Ram VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V439000 (also written 21V-439 or 21V439)
- Filed by
- Chrysler (FCA US, LLC)
- Manufacturer campaign number
- Y21
- Report received
- Potentially affected
- 32,002 vehicles (per NHTSA)
- Component
- Engine and Engine Cooling — Engine — Oil/Lubrication
- Owners notified
Repair completion: 89.24% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V439000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
NHTSA's recall notice
As NHTSA's recall record states it for campaign 21V439000.
Defect description
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.
Safety consequence
Low oil can damage the engine, causing an oil leak or a punctured engine block, increasing the risk of a fire.
Manufacturer remedy
Dealers will update the engine calibration software, free of charge. Owner notification letters were mailed June 25, 2021. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is Y21.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Sources
Official NHTSA notice for recall 21V439000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.