Check a VIN

March 20, 2026 Service bulletin

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

Mci technical service bulletin ITS61078 for 2016-2021 Mci J4500 and 2018-2020 Mci J3500.

Bulletin number
ITS61078
Component
Engine
Summary
Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR - 22inch DEF tank

Vehicles covered

VIN decoder

See the problems and recalls for an exact car

Buying a used Mci J4500?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history