2019–2020 RAM 3500, 2019–2020 RAM 4500, 2019–2020 RAM 5500 Recall: Engine calibration software may not warn about low oil volume
NHTSA campaign 21V439000 · Engine and Engine Cooling · filed Jun 10, 2021 · verified Jul 30, 2026
The defect
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.
The risk
Low oil can damage the engine, causing an oil leak or a punctured engine block, increasing the risk of a fire.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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.
Affected vehicles
Related recalls
More RAM 3500 recalls
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Other campaigns involving RAM vehicles
Source: NHTSA recall database, campaign 21V439000 (manufacturer number Y21). Data last verified Jul 30, 2026.