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May 28, 2024 Emissions

Emission Recall: Mack Trucks has identified that the Selective Catalyst Reduction (SCR) system in certain...

Mack technical service bulletin M0310 202405 for 2017-2018 Mack Anthem (An), 2017-2018 Mack Cxu and 2017-2018 Mack Granite (Gu) and others.

Bulletin number
M0310 202405
Component
Engine
Summary
Emission Recall: Mack Trucks has identified that the Selective Catalyst Reduction (SCR) system in certain vehicles equipped with the MY 2017 or 2018 MP8 (13L VGT) engine are not meeting California and EPA emissions standards, or Mack cannot confirm its compliance. These vehicles have been flagged due to telematics data showing that the NOx conversion efficiency of the SCR system has dropped below 94% for eight weeks. Alternatively, these vehicles may have communication issues with telematics, such as not reporting or ceasing reporting for the same period.

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