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March 20, 2026 Service bulletin

Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR

Mci technical service bulletin ITS61079 for 2017-2019 Mci J4500, 2020-2021 Mci J3500 and 2021 Mci D45CRTLE.

Bulletin number
ITS61079
Component
Engine
Summary
Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR - 22inch DEF tank - CA emissions.

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