Cummins recalls faulty engine control modules

Cummins Inc. is recalling 12,196 engines from its product line because a faulty engine control module (ECM) can cause stalling and increase the risk of a crash.

Paccar Inc. is the latest to report the issue, recalling 1,601 2023 model year vehicles across 21 Kenworth and Peterbilt product lines.

ECM failure affects 100% of recalled trucks, buses and professional equipment. Cummins wrote to customers Aug. 1 to say it had determined a safety-related defect in certain X15, X12, L9 and B6.7 engines manufactured between May 13 and June 28, 2022.

Potential stall problem at Cummins

The potential stalling issue results from a screw in the vendor’s selective solder fixture that backs out and pushes an electrolytic capacitor frame into the circuit board during production. An internal electrical short could cause the engine to stall without warning. The engine cannot be restarted until the ECM and possibly the fuse have been replaced.

Cummins told the National Highway Traffic Safety Administration that it learned of an engine stall at an OEM on June 14 and contacted its ECM supplier, Vitesco, on June 21. ECMs containing potentially damaged PCBs were produced from May 16 to June 2. supply chain disruptions, some engines built without ECMs prior to May 16 and subsequently fitted with suspect ECMs.

Cummins has brought the issue under control at its affected engine plants and vehicle OEM plants.

No accidents or injuries related to the condition are known. Cummins received two field reports alleging on-road engine stalls between June 14 and July 19. The company will replace damaged ECMs free of charge.

In addition to Paccar’s Kenworth and Peterbilt brands, the equipment manufacturers concerned are:


Bluebird Corp.

Daimler Truck North America


Ferrara fire apparatus

Gillig Corp.

Hollingshead Mixer Co.

Motor Coach Industries Ltd.

New Flyer Industries (Canada)

Defense of Oshkosh

Pierce Manufacturing Inc.

Rosenbauer America

Sea Graves Fire

The Shyft Group

spartan fire

Suphen Corp.

Terex Advance mixer

Tiffin Motorhomes

Volvo Trucks North America

Novabus (Canada)

Navistar International

Isuzu North America

Hino Engine Manufacturing

Fiat-Chrysler Automobiles

El Dorado Bus

Kalmar Solutions

The NHTSA recall number for Cummins is 22E-063.

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Click for more FreightWaves articles by Alan Adler.

Kevin A. Perras