SPN 5246 — SCR System Driver Inducement Level
Safe to driveEnough to reach the yard
Updated: 2026-11-10
J1939 code SPN 5246. Below — how the fault is worded at the factory by Cummins ISB, and what the second half of the code (FMI) means in the standard.
Cummins ISB 6.7 engine
| FMI 0 | SCR operator inducement, most severe |
| FMI 16 | SCR operator inducement severity high, moderately severe |
What FMI means in J1939
| SPN 5246 FMI 05246/0 · 5246.0 | data above normal range (most severe level) |
| SPN 5246 FMI 165246/16 · 5246.16 | above normal — moderate severity |
Can I keep driving
Safe to drive. Below — how much time you have and what happens if you keep going.
What happens if you keep driving
This is not the fault, it is the reaction to it: the ECU is cutting power to protect the engine or the aftertreatment.
The limit will keep tightening until the cause is fixed. The code to chase is the one that triggered this, not this one.
Where to start
This code is often not the fault itself but a knock-on. If any of these is in the same readout, start with it:
- SPN 1761AdBlue (DEF) tank level
- SPN 3364Aftertreatment 1 AdBlue Tank Quality
Nearby: engine protection
- SPN 898Requested Speed / Limit Of Speed
- SPN 1108Engine protection timer override
- SPN 1569Torque limited (engine protection)
Makes with this code
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.