Spn 5443 fmi 15 (acm) dpf hc absorptions warning description: High hydrocarbon absorption in the diesel particulate filter. i am attaching the code description and trouble shooting steps for spn 5443 fmi 15. If it won't regen then it might need the acm software updated. I hope this helps. High hydrocarbon absorption in the diesel. nov 27, 2019 · truck is a 2020 freightliner cascadia. Got code spn 5443 fmi 15 on the acm. Mcm is showing code spn 4077 fmi 14 How long have you had. Dpf hc absorption warning. Dpf hc absorption high. Dpf hc absorption very high. Feature enabled may result in an. spn 5443 (acm) (ghg17) and spn 520372 (acm) (ghg17) diagnosticlink users: Please update the troubleshooting guides in diagnosticlink with this newest version.
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