NHTSA recall 21E060000 · Equipment
Engine and engine cooling › Exhaust system › Manifold/header/muffler/tail pipe
Reported Jun 29, 2021494 vehicles affectedCummins, Inc.
The defect
Cummins, Inc. (Cummins) is recalling certain L9 Diesel Engines, with part number D563027BX03. The engine calibration software's management of the injection of Diesel Exhaust Fluid can allow excessive ammonia into the tailpipe exhaust.
The risk
Exposure to high levels of ammonia can increase the risk of injury.
The remedy
Dealers will recalibrate the engine, free of charge. Owner notification letters were mailed August 20, 2021. Owners may contact Cummins customer service at 1-800-286-6467.