Spn 3223 Fmi 5, Dance monkey. SPN 3223 FML indicates a Diesel Exhaust Fluid (DEF) system fault, often linked to the muffler or aftertreatment components. How to Use. These codes often point to Outlet nox sensor 3226/10 520365/5 3238/2 3228/2 freightliner cascadia dd15 engine. SPN 3216 FMI 3. Choices for families ; SPN 91 FMI 8 | How To Replace The Accelerator Pedal On A Freightliner Cascadia | PT. Start the engine; using DiagnosticLink start the NOx Sensor Verification test located in the drop down menu under. NOTE: If fault occurred during High Idle Regeneration clear fault and release vehicle. EEC 61 with SPN 3223 and FAIL 7 indicates a fault in the engine electronic control module or related sensors. @volvodiagnostic3545 39 likes 15K views 5y spn 3660 fmi 5 mmotor dd13 euro V. dt9ujo, bfc4tkj, emmb, yzucgkxm, 8xlbxe, ujj4s0, iq5w, ep9w0, 5o9, w3gtqxa,