SPN 4364 is a diagnostic trouble code for Aftertreatment 1 SCR Catalyst Outlet Gas.
FMI 18 – Scr Nox Conversion Efficiency Low
Troubleshoot
ACM – aftertreatment control module
EGR system, turbo, DEF injector, Doser pump
An SPN code is a suspect parameter number. It is a diagnostic fault code. A FMI is a failure mode identifier that gives more details about error.
Examples:
- SPN 4334 FMI [2-18]
- SPN 3264 FMI [0-16]
- SPN 3226 FMI [2-20]
- SPN 729 MFI [3,4,5]
- SPN 639 FMI [2-19]
- SPN 111 [FMI 1 – 18]
- SPN 103 FMI [2,15,16,18]
- SPN 91 FMI [2-19]
- SPN 84 FMI [2,9,10,19]
- SPN 101 FMI [0 – 16]
- SPN 3058 FMI[10,16,18]
- SPN 641 FMI [7 – 31]
- SPN 1761 FMI[1 – 18]
- SPN 190 FMI [0, 2, 16]
- SPN 3216 FMI 20
- SPN 5246 FMI 0
