Hello there good people
I have Freightliner Cascadia 2023 with DD15 and truck went into Stage 2 - Torque Derate for some reason
5 minutes after, on the dashboard i found couple of fault codes related to DEF System. DEF Level was just a bit below the maximum.
Went at the closest Speedco and they did SCR Test and Forced Regen, and unit passed SCR Test. Forced Regen was also sucessful but codes won't go away. And they can't delete the codes ( Picture of codes attached ).
What it could be ?
Freightliner Cascadia 2023 SCR Issue
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by EddySmith, Sep 28, 2025 at 12:19 AM.
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